Organisms that are best suited to survive will pass their traits to their offspring.
This is the answer.
1. Easily visible anatomical traits are only one kind of evidence scientists rely on when classifying organisms. Additional evidence comes from many different sources, including the fossil record and genomic analysis. Explain how these additional sources of evidence together are used to build a cladogram.
Additional sources of evidence together with genomics data are used to build a cladogram because there is info based on morphological, and embryological data that indicates homology.
What is homology in evolution?Homology in evolution refers to the similarities between organisms that are due to common ancestry, i.e. the presence of shared characteristics between species that are attributed to the inheritance of similar structures from a common ancestor such as the front limbs of a human and a horse.
Therefore, with this data, we can see that supplementary sources of information in combination with genomic information are employed to construct a cladogram.
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Which statement distinguishes the difference between niche specialists and niche generalists?
Niche generalists need particular resources.
Niche specialists have very specific habitat or resource requirements that restrict where they can
live, whereas niche generalists can adapt to environmental changes.
Niche generalists have flexible resource requirements, but niche specialists outcompete them for
these resources.
Niche specialists outcompete others who might need the same resource, but niche generalists are
less successful and are more at risk of extinction.
Niche specialists have very specific habitat or resource requirements that restrict where they can live, whereas niche generalists can adapt to environmental changes.
What are niche specialists and generalists?
Niche specialists are organisms that have highly specific habitat or resource requirements, which means that they are able to survive and reproduce only in specific environments. They are adapted to their specific niche and are able to outcompete other organisms for the resources they need to survive.
However, because of their highly specific requirements, they are restricted to a small range of habitats and are vulnerable to environmental changes. If their habitat or resource requirements are not met, they will not be able to survive.
On the other hand, niche generalists are organisms that can adapt to a wide range of environmental conditions and have more flexible resource requirements. They are able to survive and reproduce in a variety of habitats and can tolerate changes in their environment.
They are less vulnerable to environmental changes, but they may not be as competitive as niche specialists for resources. In general, they are less successful at exploiting resources and are more at risk of extinction.
In summary, niche specialists have very specific habitat or resource requirements that restrict where they can live, whereas niche generalists can adapt to environmental changes and have more flexible resource requirements.
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What is a Disadvantage to limiting livestocks movement
The ecology suffers greatly from livestock farming. It is the main cause of biodiversity loss, habitat damage, and water pollution, contributing to half of the world's greenhouse gas emissions.
What drawbacks do extensive livestock operations have?Chemical fertilizers, herbicides, and insecticides of various kinds are used in intensive farming. Animals are housed in holding facilities, which can result in overpopulation, pollution, and the spread of diseases and infections.
What is the primary issue we have with our livestock?Both land and carbon are used up while raising animals for food. Farm animals such as cows, chickens, and pigs emit enormous volumes of methane gas and need pastures, both of which are at risk as a result of desertification and soil erosion as global temperatures rise.
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what is the balance between caring for animals and using them for medical research?
Health care that relies choices about patient care on the most recent and trustworthy clinical studies is known as evidence-based medicine.
Health care that relies choices about patient care on the most recent and trustworthy clinical studies is known as evidence-based medicine. Evidence-based medicine aims to integrate the expertise of the practitioner, the patient's values, and the best research findings in order to support clinical care decisions. The phrase was first used to describe a method for enhancing physician evaluations of specific patients while simultaneously directing medical practice. In addition to these programs, CMS is also in charge of a number of other responsibilities, including those relating to administrative simplification required by the Clinical Laboratory Improvement Amendments (CLIA), the satisfaction of long-term care facility requirements through its survey and certification process, and the high standards for scientific laboratories.
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Which one of the following has the cellular components arranged in order of increasing size?
A) Amino acid < protein < mitochondrion < ribosome
B) Amino acid < protein < ribosome < mitochondrion
C) Amino acid < ribosome < protein < mitochondrion
D) Protein < amino acid < mitochondrion < ribosome
E) Protein < ribosome < mitochondrion < amino acid
The order of the cellular components of a cell is amino acid, protein, ribosome, and mitochondrion, in that order.
How is the correct sequence of amino acids supplied to match the codon in the mRNA?When the mRNA's codons come into contact with the ribosome's active site, the nucleotide sequence of the mRNA is translated into an amino acid sequence, with the aid of the tRNAs acting as adaptors to add each amino acid in the proper sequence to the end of the expanding polypeptide chain.
What is the typical arrangement of essential amino acids?It's crucial to remember that proteins usually never include any amino acids other than those with the l-configuration.
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The drastic decline in the number of Kirkland's warblers, prompting the U. S. Forest Service to include the Kirtland’s warbler on the list of endangered species in 1967 under the Endangered Species Preservation Act of 1966 was due to
Responses
A eggshell thinning due to DDT use.eggshell thinning due to DDT use.
B habitat loss as young Jack pine forests matured.habitat loss as young Jack pine forests matured.
C competition for food among the other northern bird species.competition for food among the other northern bird species.
D the increase in wildfires that destroyed the developing Jack pine forests.
Answer: D
Explanation:
The main reason behind the drastic decline is an increase in wildfires that destroyed the developing Jack pine forests. Therefore, option "D" is correct.
What are endangered species?The meaning of the word endangered is anything is on the verge of extinction. The organism, plants, and animals which at the verge of extinction are known as the endangered species. The major reasons behind the extinction are loss of habitat, loss of genetic variation, and natural selection.
The process is rapid. Examples of animals that are on the list of extinction are pandas, snow leopards, tigers, amur leopards, black-footed ferrets, blue whales, turtles, red pandas, and black rhinoceros.
Therefore, human beings should make efforts to conserve the animals.
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what is currently being done to blue whales species to protect this species from going extinct? Please helpppp
The International Whaling Commission (IWC) has declared a moratorium on commercial whaling and made it illegal to catch, hunt, injure, or kill all species of whale, including the Blue Whale. Additionally, the US government has placed Blue Whales under the protection of the Endangered Species Act since 1970, making it illegal to take, import, export, or sell any Blue Whale or its products. Furthermore, the United Nations and other international organizations have declared the largest areas of the ocean off-limits to human activities such as fishing, oil drilling, and other activities that may harm cetaceans like Blue Whales. Finally, several nations have established Marine Protected Areas to serve as habitats for the whale population, helping to ensure that the species does not become too depleted.
Consider the structure and function of DNA. Which of the following statements is true?
a .Because DNA contains carbohydrates, it provides structural support to the cells.
b. The phosphodiester bonds that stabilize the association of the two strands are easily broken and reformed.
c. If the sequence of one DNA strand is known, then the sequence of the other strand can be determined.
d. Since DNA is made of phosphate groups that are ionized, it could easily pass through a cell membrane.
Knowing the sequencing of one Strand of dna makes it possible to identify the code of the second strand. During DNA replication and during the production of RNA during transcription, these regulations serve as the foundation or blueprint for the creation of identical daughter DNA molecules.
What is DNA, and why is it DNA significant?The genetic code for creating and maintaining all living things is found in DNA, a complex, long-chained molecule. DNA, a molecule that may be found in almost all cells, contains the instructions required to produce proteins, specialised molecules that are crucial to the growth and operation of the body.
What is DNA so special?Deoxyribonucleic acid is the name given to DNA because of its structure. The deoxyribose component of the nucleic acid contains pentose sugar, while the phosphate backbone of the nucleic acid contains bases including adenine, cytosine, guanine, & thymine. Deoxyribose lacks the -OH group in the sugar ring's second position.
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A population of squirrels lived together in a forest. An event occurred that caused the population to diverge into two different species over a long period of time. Which of the following is most likely the event that occurred?
There was an increase in the predators in the forest.
A natural disaster occurred that separated squirrels.
The winters were unusually cold in the forest.
A disease affected the squirrel population in the forest
Answer: B. A natural disaster occurred that separated squirrels.
Explanation: Based on the given options, the event that is most likely to have caused the population of squirrels to diverge into two different species over a long period of time is a natural disaster that occurred and separated the squirrels.
A natural disaster, such as an earthquake or flood can physically separate populations of squirrels by creating geographical barriers. These barriers can prevent gene flow between the two groups, leading to genetic isolation and divergence over time.
When populations of squirrels are separated by these barriers, it limits their ability to interact and breed with one another. This lack of gene flow between the two groups can lead to genetic isolation. Over time, the isolated populations may accumulate different genetic variations and undergo genetic changes through mechanisms such as genetic drift and natural selection. These changes can eventually result in the formation of new species.
For each of the following examples of data given below, determine whether it is quantitative, qualitative or ranked.
1. The size of a t-shirt (small, medium, large) ordered by a sample of Wendy's customers.
2. The number of iPhones exported annually by the U.S. over the last five years.
3. The month of highest vacancy rate at a Holiday Inn Express hotel.
4. The weekly closing price of General Electric stock.
5. The percentage grades received by students on a statistics exam.
6. The letter grades received by students on a statistics exam.
The size of a t-shirt ordered by a sample of Wendy's customers, the number of iPhones exported annually by the U.S., the month with the highest vacancy rate at a Holiday Inn Express hotel.
The size of a t-shirt (small, medium, large) ordered by a sample of Wendy's customers is an example of qualitative data. It is the attribute of the size of a t-shirt and not a numerical value.The number of iPhones exported annually by the U.S. over the last five years is an example of quantitative data. It is a numerical value.The month with the highest vacancy rate at a Holiday Inn Express hotel is an example of qualitative data. It is an attribute and not a numerical value.The weekly closing price of General Electric stock is an example of quantitative data. It is a numerical value.The percentage of grades received by students on a statistics exam is an example of quantitative data. It is a numerical value.The letter grades received by students on a statistics exam are an example of ranked data. It is a ranking of the student's performance and not a numerical value.To learn more about quantitative at
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such
as
Refer to the concept map for the answers to numbers 1 and 2. Maria made a
list of plants that are grown in her school and classified them as follows.
C.
b.
a
C.
d.
C
Pine free
1. Write the correct headings for:
d
Avocado tree
Plants in my school
e spor
can be classified as
a.
b.
phyte stage
C.
d.
b
2. Give another example for each
group of plants.
for example
ferns
Help pls!
The this double tropical evergreen tree Persea americana, also known as the avocado, is indigenous to Mexico. The miniature, green flowers emerge in numerous inflorescences but lack true petals.
What do plants' inflorescences look like?An arrangement is a cluster containing flowers on even a twig or a network of branches in a type of plant. The configuration of blossoms on a primary axis (base of the plant) and the period of an inflorescence's flowering are used to classify them.
How does an inflorescence develop?A group or clump of flowers called an inflorescence is organized on a stem made up of a primary branch or a complex network of branches. According to its morphology, the axis plant's transformed portion of the shoot is where flowers develop.
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The process of evaporation is involved in the operation of cooling systems to remove heat energy. a. true b. false
Answer: true
Explanation: because evaporation causes cooling because the process requires heat energy.
When a flower is said to be 'purple', what is being described?
When a flower is described as "purple," it means that the color of the flower's petals is a shade of purple.
The color purple is a result of the presence of pigments called anthocyanins in the petals.
These pigments are responsible for the red, purple, and blue colors in flowers, fruits, and leaves of some plants. The actual shade of purple that the flower displays can vary depending on the specific type of anthocyanin pigments present, and how much of them are present.
Additionally, the color can also be influenced by other factors such as lighting, the angle from which the flower is viewed, and the age of the flower.
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An example of an organism that has only behavioral controls over its body temperature is the. A) house sparrow. B) penguin. C) bluefin tuna. D) gray wolf.
The green frog is an example of an organism that regulates its body temperature solely through activity.
What kind of organism can keep its internal temperature at a level that is adequate for life?Endotherms use heat produced internally to keep their body temperatures stable. No matter the surroundings, their body temperature tends to remain constant. Ectotherms rely mostly on outside heat sources, and the environment's temperature affects how hot or cold they are inside.
What physiological state is characterized by decreased activity and metabolism?Torpor, also known as dormancy, is a physiological and behavioral state that is widely recognized in both plants and animals and typically denotes inactivity and a slowed metabolic rate. It can involve a number of physiological responses to various environmental cues, such as temperature, water, or food.
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1. A woman claims to have been assaulted by three men. Evidence was collected from the victim. Statements were taken from each of the three suspects and the victim. DNA samples were also collected from each person. The suspects were arrested and charged with the crime. The case proceeded to trial. Which was the role of forensic scientists in this scenario?
A) charging the suspects and proceeding to trial
B) taking statements
C) arresting the suspects
D) collecting evidence from the victim and the suspects
2. The bullet from a suspect's pistol did not match the bullet found in a murder victim. There was blood on the carpet around the murder victim, but none on the suspect. The suspect's car was seen at the residence of the victim on the night of the murder. Carpet fibers from the room where the victim was found matched those found on the suspect. Based on Locard's principle, which is a correct conclusion and why?
A) The suspect was at the house because witnesses saw his car.
B) The suspect killed the victim with his gun.
C) The suspect killed the victim, which is known because carpet fibers on the suspect matched those in the room where the victim was found.
D) The suspect was in the room where the victim was found because of the matching carpet fibers.
3. A woman was found strangled in the basement of her home where she lived with her husband. The crime scene was processed and investigators left. The next day, the medical examiner reported that a scalloped, woven belt was used to strangle the victim. The police want to search the house again to look for such a belt. Which statement is true?
A) The police need to get a search warrant, according to Michigan v. Tyler.
B) The police do not need a warrant, according to the Third Amendment to the U.S. Constitution.
C) The police need to get a search warrant, according to Daubert v. Merrell Dow Pharmaceuticals.
D) The police do not need a warrant because the house is still a valid crime scene, according to Mincey v. Arizona.
4. A man was robbed in an alley outside a busy restaurant. He was assaulted with a baseball bat that was left at the scene. There were bloody footprints leading away from him. He was treated by paramedics and taken to a hospital. Two witnesses saw the robbery. The suspect fled the scene. Which task should be done by detectives?
A) take photographs of the scene including the bloody footprints
B) secure the crime scene
C) interview the witnesses
D) collect the bat and the blood samples
5. Which describes the activity of an arson investigator?
A) determining the angle of a bullet shot from an assassin
B) identifying the cause of death
C) reconstructing an explosion or fire
D) identifying the clothing found in a crime scene
6. What was the contribution of Calvin Goddard to forensic science?
A) He wrote the first book on questioned document examination to determine forgeries.
B) He invented the comparison microscope.
C) He refined the process of comparing bullets to make ballistic comparisons.
D) He was the first westerner to perform an autopsy.
7. A witness is scheduled to testify about a new unpublished procedure for detecting gases from dead bodies. The judge summarily rules that the witness cannot testify because the procedure has not been accepted by the scientific community. Which precedent is this ruling based on?
A) Frye standard
B) Miranda standard
C) Daubert ruling
D) Kumho standard
8. Which is NOT a duty of a first responder when arriving at a crime scene?
A) immediately take evidence photographs
B) locate witnesses
C) render aid and assistance
D) secure the crime scene
9. Who has most likely previously been a uniformed police officer?
A) detective
B) district attorney
C) coroner
D) forensic investigator
10. Who initially determines the time of death at a crime scene?
A) paramedic
B) police officer
C) coroner
D) detective
11. What is the first duty of the crime scene photographer?
A) take overall photos of the undisturbed crime scene
B) secure the crime scene
C) take photos of the witnesses
D) take close-up photos of the evidence
12. Which is necessary when setting up oblique lighting to reveal details of a tire track?
A) flash attached to a camera
B) external light source
C) ultraviolet light source
D) infrared light source
Answer:
1. D) collecting evidence from the victim and the suspects
2. D) The suspect was in the room where the victim was found because of the matching carpet fibers.
4. D) collect the bat and the blood samples
5. C) reconstructing an explosion or fire
6. C) He refined the process of comparing bullets to make ballistic comparisons.
7. A) Frye standard
8. B) locate witnesses
9. D) forensic investigator
10. A) paramedic
11. A) take overall photos of the undisturbed crime scene
12. C) ultraviolet light source
choose the best answer(s) from the list below. the glucose alanine cycle involves: 1- the transfer of the amino group from alanine to glutamate to form glutamine in the liver. 2- the transport of pyruvate from muscle to liver in the form of alanine. 3- the transport of nh4 from muscle to liver in the form of alanine.
the glucose alanine cycle involves the glucose alanine cycle involves the transfer of the amino group from alanine to glutamate to form glutamine in the liver
The glucose-alanine cycle, also known as the Cahill cycle or the alanine cycle in the literature, entails the breakdown of muscle protein to produce more glucose and produce more ATP for muscular contraction. It enables the transportation of pyruvate and glutamate from muscle tissue to the liver, where gluconeogenesis occurs to provide the muscle tissue with extra glucose, as was previously explained. Muscle and other tissues that metabolise amino acids for energy produce amino groups through the transamination process, most frequently in the form of glutamate, to start the cycle. Alanine and alpha-ketoglutarate are created when these amino groups are transferred by the enzyme alanine aminotransferase to the glycolysis byproduct pyruvate. Alanine then travels through the bloodstream to the liver, where alanine aminotransferase earlier catalysed a process. Blood carries alanine from peripheral tissues to the liver where it is converted to glucose and urea. Peripheral tissues, particularly skeletal muscle, receive glucose for conversion to alanine by a process that combines glycolysis and transamination of pyruvate with glutamate.
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The glucose-alanine cycle involves transferring an amino group from alanine to glutamate to form glutamine in the liver.
The glucose-alanine cycle, also known in the literature as the Cahill cycle or the alanine cycle, involves the breakdown of muscle protein, producing more glucose and producing more ATP for muscle contraction. As previously explained, it enables the transport of pyruvate and glutamate to the liver where gluconeogenesis takes place to supply excess glucose from muscle tissue. Muscle and other tissues that convert amino acids into energy It undergoes a transamination process to produce an amino group, most commonly in the form of glutamic acid, which initiates the cycle. It is formed when it is transferred to an acid. Alanine then traveled through the bloodstream to the liver, where alanine aminotransferase catalyzed the process. Blood transports alanine from peripheral tissues to the liver where it is converted to glucose and urea. Peripheral tissues, especially skeletal muscle, obtain glucose for conversion to alanine by a process that combines glycolysis and transamination of pyruvate with glutamate.
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"The Roman numeral V indicates the ________ nerve.
Question 18 options:
a) trigeminal
b) trochlear
c) oculomotor
d) vestibulocochlear"
Option a is Correct. The trigeminal nerve is denoted by the Roman numeral V.
The reason why the cranial nerves are numbered in Roman numerals is because they were initially catalogued when Roman numerals were widely used.
Roman numerals are used to identify the cranial nerves as follows: The olfactory nerve, the optic nerve, the oculomotor nerve, the trigeminal nerve, the abducens nerve, the facial nerve, the vestibulocochlear nerve, the glossopharyngeal nerve, the nerve, the accessory nerve, the hypoglossal, and the trochlear nerve.
Using a pinprick to test facial sensibility and a wisp of cotton brushed against the lower or lateral cornea to test the corneal reflex, researchers can assess the 3 sensory divisions (ophthalmic, maxillary, and mandibular) of the 5th (trigeminal) nerve.
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During photosynthesis,_______chemical energy.
energy is changed to
EUKARYOTES VS PROKARYOTES
Directions: Drag the term prokaryote or eukaryote to the box that it applies to. If the
concept or structure applies to both eukaryotes & prokaryotes, drag the 'both' box.
Read the code from left to right to unlock the next section. You will have extras.
ribosomes (both)
chromosomes (both)
archeans (eukaryotic)
lysosomes (eukaryotic)
plasmids (both)
cell membrane (eukaryotic)
which of the following refers to the transformation of stimulus energy into neural impulses? responses perception perception bottom-up processing bottom-up processing top-down processing top-down processing transduction transduction psychophysics
Transduction refers to the transformation of stimulus energy into neural impulses.
A virus or other viral vector introduces foreign DNA into a cell through a process known as transduction. One illustration of horizontal gene transfer is the viral transmission of DNA from one bacterium to another.
In contrast to conjugation, which involves physical contact between the cells giving and receiving DNA, transduction is DNase resistant (transformation is susceptible to DNase).
Molecular biologists frequently utilize transduction to successfully transfer a foreign gene into the genome of a host cell (both bacterial and mammalian cells).
At the University of Wisconsin-Madison, researchers Norton Zinder and Joshua Lederberg identified transduction in Salmonella in 1952.
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The conversion of stimulus energy into neuronal impulses is referred to as transduction.
Transduction occurs when a virus or other viral vector delivers foreign DNA into a cell. The viral transmission of DNA from one bacteria to another is an example of horizontal gene transfer.
Transduction, unlike conjugation, which requires physical contact between the cells providing and receiving DNA, is DNase resistant (transformation is susceptible to DNase).
Transduction is a technique used often by molecular biologists to effectively transfer a foreign gene into the genome of a human host (both bacterial and mammalian cells).
In 1952, researchers Norton Zinder and Joshua Lederberg at the University of Wisconsin-Madison discovered transduction in Salmonella.
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_____ means that the genomic RNA can function as mRNA. a. double-stranded. b. negative polarity. c. positive polarity. d. replica intermediates.
Positive polarity means that the genomic RNA can function as mRNA.
Positive polarity refers to the sense of the RNA molecule in relation to its template DNA. Positive polarity means that the RNA molecule has the same sense or direction as the template DNA.
It is the property of RNA that allows it to function as mRNA (messenger RNA), which is the type of RNA that carries genetic information from DNA to the ribosomes, where proteins are synthesized.
mRNA is synthesized by the process of transcription, in which a segment of DNA is copied into RNA. Positive polarity RNA can be translated by ribosomes into a protein. mRNA has a linear sequence of nucleotides and it is single-stranded.
Positive polarity is important for the correct translation of genetic information into a functional protein. This is the reason why the transcription process is crucial for the synthesis of mRNA.
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Pretest: Unit 1
The model shows an error that can occur during DNA replication.
Template DNA strand
DNA during replication TCT GGT
↓
Resulting DNA strand TCTGGT
Which type of replication error does it represent?
OA. Substitution
B. Inversion
C. Deletion
AGA CA GATTC
D. Insertion
C
PREVIOUS
CTAAG
CTAAG
Inversion of DNA strands is the replication mistake that is most likely to occur in the resultant DNA strand.
What does DNA replication inversion entail?Inversions. When a chromosome splits in two, the resultant fragment of DNA is reversed and reinserted into the chromosome, causing an inversion. The chromosomal breaks may or may not result in the loss of genetic material.
What impact does DNA inversion have?Meiosis structural issues can result from inversions, such as certain pericentric inversions. A breakpoint can also change the expression of a gene or stop an open reading frame. The results might be harmful.
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Which of the following which of the following is needed to synthesize a new strand of DNA. There are four basic components required to initiate and propagate DNA synthesis. These are there are four basic components required to initiate and propagate their DNA synthesis. They are substrate number one second. They are template 3rd. There are primary and four There are enzymes. So and RNA primer and arrival. Samel. An RNA primer is needed to begin DNA synthesis. A new strand is. RNA primer is needed to begin begin their DNA synthesis.
For DNA synthesis to begin and spread, four fundamental elements are needed. They are: enzymes, primer, template, and substrates.
Which enzyme from the list below aids in the formation of a fresh RNA strand from the DNA segment?The short RNA primers are created on the lagging strand by an enzyme called DNA primase using ribonucleoside triphosphates as a building block.
How does one create DNA?When a cell divides, a process known as replication causes DNA biosynthesis to take place. It entails separating the DNA double helix and creating a complementary DNA strand later on while using the parent DNA chain as a template. Deoxyribonucleoside 5′-triphosphates (dNTPs), which are joined to produce the expanding DNA chain, are joined by the key enzyme DNA polymerase.
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Question 5 of 25
Most scientists use scientific methods in which of the following orders?
O A. Analyze data, draw conclusions, and conduct an experiment
OB. Form a hypothesis, conduct an experiment, and collect data
OC. Analyze data, state the question as a problem, and collect data
OD. Draw conclusions, collect data, and form a hypothesis
Answer:
The answer should be OB. Form a hypothesis, conduct an experiment, and collect data
Which of the following is NOT a difference between anaphase I and anaphase II?
A. At the end of anaphase I, each chromosome is composed of two chromatids and at the end of anaphase II, sister chromatids have separated, becoming daughter chromosomes
B. Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell.
C. Sister chromatids separate during anaphase II while homologous chromosomes separate during anaphase I.
D. The cell undergoing anaphase II is genetically different from what it contained while undergoing anaphase I.
Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell.
The correct option is B.
A chromosome is a lengthy DNA molecule that stores all or a portion of an organism's genetic information. Together with chaperone proteins, histones adhere to and compress the DNA molecule to shield it from damage. Histone proteins make up the majority of eukaryotic chromosomes. Controlling transcription depends on the unusual three-dimensional structure of these chromosomes. In eukaryotic cells, the nuclear envelope is a carefully regulated membrane barrier that segregates the cytoplasm from the nucleus (NE). It is made up of many proteins that have been connected to chromatin organisation and gene regulation.
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A student made an energy pyramid that has 3 levels. The bottom level had 100 rectangles, how many rectangles must be in the top energy level?
If the bottom level of the energy pyramid had 100 rectangles, the top energy level would have only 1 triangle.
Energy pyramidThe energy pyramid is a pyramid that shows how energy is transferred from one trophic level to another in an ecosystem. According to findings, only about 10% of the energy from the lower pyramid level gets to the higher energy level.
The lowest energy level in a typical energy pyramid is occupied by producers. Thus, assuming that a total of 100 J of energy is available at the producer level, only 10 J (1o% of 100) will get to the next level which would be the primary consumer.
In other words, if the bottom level of the energy pyramid designed by the student had 100 rectangles, the next level would have 10 rectangles.
Thus, the topmost level of the student's energy pyramid would have:
10% of 10 = 10/100 x 10 = 1 reactangle.
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 What data did the test on the purified substance produce how did the data further support the hypothesis that DNA is the transforming factor
Based on research analysis, the data the tests on the purified substance produce is a negative result in chemical tests to observe proteins, but a strongly positive result in a chemical test to observe DNA.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning.
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes.
DNA is made of nucleotides. A nucleotide has two components: a backbone, made from the sugar deoxyribose and phosphate groups, and nitrogenous bases, known as cytosine, thymine, adenine, and guanine.
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if a solute concentration gradient has been established across a membrane, the permeable solute will diffuse across the membrane:
Permeable solute will diffuse across a membrane if a solute concentration gradient has been established: from the side with a higher concentration to the side with a lower concentration.
The bigger the concentration difference between two locations, the steeper the concentration gradient and the faster the rate of diffusion.
Temperature: As the temperature rises, so does the energy and hence the movement of the molecules, which increases the rate of diffusion.
The concentration gradient, membrane permeability, temperature, and pressure all influence the rate of diffusion.
The concentration gradient influences the movement of osmosis; the lower the concentration of a solute inside a solvent, the faster osmosis will occur in that solvent.
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Basically this question is asking you to identify the source of the energies listed.
Erosion by water energy source is the the sun.
melting of rock energy source is inside earth
weathering by wind energy source is the sun
weathering by water energy source is the sun
heat and pressure energy source is the sun
flow of magma energy source is inside earth
What are energy sources?
Energy sources are described as forms of potential energy that can be used to perform work.
Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas and renewable sources like wind, solar and so much more.
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20 POINTS
A scientist sets up an experiment to test which fertilizer has the best effect on increasing fruit size in a single variety of avocado trees. They grow one group of avocado trees using Fertilizer-A, one group using Fertilizer-B, one group using Fertilizer-C, and one group grown without any fertilizer.
All the avocado trees are given the same amount of water and sunlight, and they are all grown during the same period of time.
Which of the following is the independent variable in this experiment?
Question 2 options:
The type of fertilizer used
The size of the avocados
The amount of water, sunlight, and time
The amount of water only
Answer:
The type of fertilizer used
Explanation:
Answer:
The independent variable in this experiment is the type of fertilizer used.
An independent variable is a factor that is manipulated or changed by the experimenter to test its effect on a dependent variable. In this experiment, the scientist is comparing the effect of different fertilizers (Fertilizer-A, Fertilizer-B, Fertilizer-C) on the size of the avocados. Therefore, the type of fertilizer used is the independent variable.
Explanation: