Answer: the adult human body has 206 bones in total
A covalent bond is formed when atoms share valence electrons. Which group of elements form covalent bonds?
SOMEONE PLZ HELP ME Part B: Evaluating Results
Question 1
Explain why your model demonstrates how crossing over is important to genetic variation in a species.
Question 2
Look at the offspring you created in your model. Have any of the offspring inherited a more beneficial genetic combination than the others? How could this affect their survival? Explain your reasoning.
Question 3
Why is it impossible to predict the phenotype of the offspring by observing only the phenotype of the two parents?
Answer:
the last one is:
In the process of meiosis, alleles separate and are added to the gametes in an independent manner. While each gamete (egg or sperm cell) therefore contains one allele for each gene, it's impossible to know which allele, because alleles segregate in a random manner. However, it's possible to calculate probabilities that the offspring will have a given allele using Punnett squares.
Explanation:
Crossing over process results in new combinations of alleles in the gametes (egg or sperm) formed, which ensures genomic variation in any offspring produced.
What do you mean by crossing over process?Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes' non-sister chromatids that results in recombinant chromosomes.
This process, also known as crossing over, creates gametes that contain new combinations of genes, which helps maximize the genetic diversity of any offspring that result from the eventual union of two gametes during sexual reproduction.
Crossing over is an enzyme-mediated process, where the exchange of genetic material between non-sister chromatids of homologous chromosomes takes place.
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If cells are placed in a strong sugar solution, water will ___.
Answer: Pass mostly from the cells to the sugar solution
Answer:
Pass mostly from the cells to the sugar solution
Explanation:
I remember learning this in 6th grade! <3
PLEASE I NEED HELP ASAP, I WILL GIVE BRAINLIEST
Which resource is sometimes unpredictable in terms of energy production?
coal
wood
gasoline
natural gas
Answer:
Natural gas
Explanation:
Answer:
The answer is Natural gas
Explanation:
A single-cell organism that reproduces asexually through mitosis contains 24 chromosomes. When the organism reproduces, how many chromosomes will there be in the resulting daughter cells?
Answer: there will be 24 daughter cells I believe.
Explanation:
Why does diuron cause coral to bleach
Simple answer:
When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching. ... This is called coral bleaching. When a coral bleaches, it is not dead.
More in depth explanation:
Exposure to higher (100 and 1000 µg l-1) diuron concentrations for 96 h caused a reduction in ΔF/Fm¹, the ratio variable to maximal fluorescence (Fv/Fm), a significant loss of symbiotic dinoflagellates and pronounced tissue retraction, causing the corals to pale or bleach.
Hope this helped :)
Before conducting an experiment, a scientist needs to review _____.
Answer:
post a testable question
state hypothesis
Answer:
make sure they have a testable question
Explanation:
The diagram below represents the distribution of some molecules inside and outside of an artificial cell over a period of time .
Which statement is best supported by the diagram?
1. Oxygen molecules entered the cell over time by active transport.
2. Water molecules are too large to enter or leave the cell, so they remained where they were at the start of the investigation.
3. Protein molecule are kept inside of the cell because the cell needs them.
4. The protein molecules are too large to diffuse out the cell.
Answer:it’s B
Explanation:
No explanation needed
The given diagram describes that 2. Water molecules are too large to enter or leave the cell, so they remained where they were at the start of the investigation.
A cell is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge.
The given diagram describes that 2. Water molecules are too large to enter or leave the cell, so they remained where they were at the start of the investigation.
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Help ASAP please! Which fuels are derived from organic matter?
Energy sources from the ocean that are derived from once-living organic matter include ________ and hydrocarbons.
The answer is a fill in the blank.
Answer:Fossil Fuels
Explanation:
Answer:
Biofuels
Explanation:
I just took the test on plato and it was correct :)
6. What are biodegradable materials
a. These are materials that can be decomposed.
b. These are materials that do not decomposed.
c. These are harmful materials.
d. These are materials that both decomposed and not dec
Answer:
A
Explanation:
These are the materials that can be decomposed
what do non metals do with their valence electrons?
3. While looking through a drawer a person touches a sharp object and
quickly moves their hand away. Which body systems have worked
together to move the hand away from the sharp object? *
A-The immune system senses pathogens from the sharp object and sends a message
to the nervous system to move the hand away.
B-The nervous system senses pain from the sharp object and sends a message to the
skeletal system to move the hand away.
C-The nervous system senses pain from the sharp object and sends a message to the
muscular system to move the hand away.
D-The immune system senses pathogens from the sharp object and sends a message
to the muscular system to move the hand away.
Answer: the answer is obviously C
Explanation: the nervous system is the main system to deal with pain so that narows it down to B or C so then you see that b talks about sending signals to the skeletal system, well, thats not posible without the muscular system, which literally leads you to C
Hydrogen peroxide naturally breaks down into oxygen and water over time. When exposed to the enzyme catalase, hydrogen peroxide is rapidly converted into oxygen and water.
What feature of catalase most likely is responsible for the change in the rate of conversion of hydrogen peroxide into water and oxygen?
A, Catalase speeds up the conversion of hydrogen peroxide into water and oxygen by decreasing the reaction's activation energy.
B, Catalase bonds permanently with the reactants causing hydrogen peroxide to rapidly break down by increasing the activation energy.
C ,Catalase has a flexible structure that allows it to bind and convert any small hydrogen containing compound into water and oxygen.
D, Catalase remains intact, so small amounts of it convert large amounts of hydrogen peroxide into water and oxygen immediately.
Answer:
Catalase is an enzyme in the liver that breaks down harmful hydrogen peroxide into oxygen and water. When this reaction occurs, oxygen gas bubbles escape and create foam. Completely disinfect any surface that the raw liver touches during this activit.
Explanation:
hope this helps you a little have a great day sir/mam
Catalase speeds up the conversion of hydrogen peroxide into water and oxygen by decreasing the reaction's activation energy. Thus option A is correct.
What is the function of catalase ?Catalase is a common enzyme present in all living organisms.
These are tetramer molecule consisting of four polypeptide chains, each of these chains are over 500 amino acids.
In mammal it is found in liver and contains four iron-containing heme groups that allow the enzyme to react with hydrogen peroxide.
In mammalian cell, Catalase involve in decomposition of most toxic substance called hydrogen peroxide into less toxic products like water and oxygen.
It protect the cell from oxidative damage by reactive oxygen species.
The optimum pH and optimum temperature for the activity of this enzyme ranges from four and eleven depending on the species.
Thus option A is correct.
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1-A rock that contains evidence of past animal or plant life is called a
2- Prehistoric
have been discovered in permafrost in Alaska and Siberia.
3 - Hardened tree sap can preserve animals in a substance called
4 - Fossils can be created by replacement using minerals such as?
Solid
5-A
shows the original shape of the plant or animal.
6 - A cast represents a
version of the original plant or animal.
7 - Trails, tracks and burrows are examples of
fossils
8- Some of the oldest fossils on earth are from ancient
crawling on the seafloor.
:: Fossils
:: Amber
:: Silica
:: Woolly Mammoth
Pyrite
:: Trace
Calcite
: Mold
:: Worms
1
Answer:
1. A rock that contains evidence of past animal or plant life is called a fossil.
2. Prehistoric Woolly Mammoth have been discovered in permafrost in Alaska and Siberia.
3. Hardened tree sap can preserve animals in a substance called amber.
4. Fossils can be created by replacement using minerals such as silica, calcite, pyrite.
5. A mold shows the original shape of the plant or animal.
6. A cast represents a solid version of the original plant or animal.
7. Trails, tracks and burrows are examples of trace fossils.
8. Some of the oldest fossils on earth are from ancient worms crawling on the seafloor.
Explanation:
Fossils are known to be the remains of plants and animals which have been preserved and kept in rock. They are usually a shell, skeleton or plant fiber that has been buried. Over time, they turned into rock.
Fossil amber are known to be fossil insects that are preserved in hardened tree sap. These insects and some small animal or plant that are found in these hardened tree sap were trapped in the tree.
Woolly Mammoth is known to be a closest extant relative to the Asian elephant. The appearance and behaviour of woolly mammoth are among the best studied in Siberia and Alaska.
Bats,humans,and chimpanzees have similar structures to their front limbs. what is an example of this?
Answer:
Homologous traits.
Explanation:
I definately do not believe in the idea of homologous OR analogous traits, however, I do want to help you out and I can tell you what your textbook says: A homologous trait is any characteristic which is derived by evolution from a common ancestor.
Radish color is controlled by a gene that exhibits incomplete dominance; purebred red radishes (RR) crossed with purebred white radishes (WW) make purple radishes (RW). What are the chances of producing purple offspring when you cross two purple parents?
Answer:
1/2
Explanation:
This question involves a single Gene coding for fruit color in radish plants. The gene exhibits incomplete dominance where the allele for red radish (R) and the allele for white radish (W) forms a hybrid with a purple radish (RW).
If a purebred red radish (RR) is crossed with purebred white radishes (WW), purple radishes (RW) will be formed. However, when the purple radishes are self-crossed i.e. RW × RW, the following gametes will be produced- R and W.
Using these gametes in a punnet square (see attached image), the following offsprings will be produced in the following proportions:
RR - red = 1/4
RW - purple = 2/4 or 1/2
WW - white = 1/4
Hence, the chances of producing purple offspring when you cross two purple parents is 1/2.
Normal cells become cancer cells when
1. regulation of cell growth and division is lost.
2.All of the above
3.cells do not respond normally to control mechanisms.
4.cells continue to divide without passing through G1.
Answer:
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Explanation:
this is what i found
hope it helps
what are the two inheritance patterns of blood type
how do I take a picture of a chart and then type the question under it for someone to answer?
What are the functions of carbohydrates? Select all that apply.
A Storing energy
UB Storing information
C Structural support
D Intercellular signaling
OE Building proteins
OF Aiding in digestion
The functions of Carbonhydrates include :
Storing energyStoring energyBuilding proteinsCarbonhydrates refers to a one of the six classes of nutrients which can be derived from food. They are common in food containing Starch including rice, corn and so on.
Carbonhydrates main function is to provide the body with energy. Other functions include sparing the use of proteins and the breakdown of fat and the regulation of body glucose.
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True or False:
Shearing can cause a rock to break and slip apart
Answer:
True
Step-by-step explanation:
mark brainliest
1. "For oxygen to enter the blood, how must the concentration of O2 in the alveoli compare to O2 in the blood?" 2. "For carbon dioxide to leave the blood and enter the alveoli, how must the concentration of CO2 in the blood compare to CO2 in the alveoli?" 3. "When diffusion has reached equil- ibrium, we say that the net movement of the molecules is zero. Does movement stop? Explain."
Answer:
1. Concentration of O2 in the alveoli must be more than that of the blood
2. Concentration of CO2 in the blood must be more than that of the alveoli
3. Movement does not stop (find the explanation below).
Explanation:
Gaseous exchange i.e. taking in of O2 and taking out of CO2, takes place in the alveoli/air sac of the lungs. However, the movement in and out of O2 and CO2 from the alveoli into the bloodstream and vice versa follows the principles of SIMPLE DIFFUSION. Diffusion is the process whereby substances move from a region of high concentration to a region of low concentration until they are evenly distributed. Based on this, the following will occur:
1. The concentration of O2 in the alveoli must be more than that in the blood in order for oxygen to enter the blood via diffusion.
2. The concentration of CO2 in the blood must be more than that in the alveoli in order for carbon dioxide to leave the blood and enter the alveoli via diffusion.
3. When the rate of diffusion is at equilibrium i.e. no net movement is occuring die to equal concentration of the substance on both sides, the substances begin to move in the opposite direction at an equal rate. Note that, at equilibrium, MOVEMENT DOES NOT STOP, however, there is an equal rate of movement.
What is the name of the process shown?
?
A)
mitosis
B)
meiosis
C) glycolysis
D) genetic mapping
Answer:
D hope this can help
7. Write the chemical formula for photosynthesis: using chemical symbols AND using words.
Answer:
The photosynthesis equation is written as:
Explanation:
6H2O + 6CO2 → C6H12O6 + 6O2.
In words it is written as:
the reaction of six water molecules with six carbon dioxide molecules yielding one glucose molecule and six oxygen molecules.
Hope this helped!
explain why people sleep under mosquito nets in some parts of the world
Answer:
A mosquito net is a type of meshed curtain that is circumferentially draped over a bed or a sleeping area, to offer the sleeper barrier protection against bites and stings from mosquitos, flies, and other pest insects, and thus against the diseases they may carry
A botanist discovers a new species of plant in a tropical rainforest. Its characteristics include flagellated sperm, presence of xylem for conducting water, independent gametophyte and sporophyte stages, no seeds. This plant is most likely a
Answer:
Fern
Explanation:
The plant discovered by the botanist is most likely a fern.
Ferns are referred to as seedless vascular plants. They do not produce seeds and they possess vascular tissues in the names of xylem and phloem. The xylem conducts water/mineral salts from the roots to the body of the plant while the phloem distributes manufactured foods from their sources to other parts of the plant.
Ferns also have independent gametophyte and sporophyte stages. The sporophyte produces haploid spores through meiosis which then germinates to the gametophyte. The gametophyte produces male and female gametes - antheridium and archegonium. The antheridium is motile and swims to meet the immotile archegonium during fertilization to produce the zygote which then divides mitotically to give the sporophyte.
Give a reason why the permanent tissue does not grow
Answer:
they are plant cells thst have comppleted their growth and do not divide
Explanation:
there is no meristemic growth
Unlike meristems, permanent tissue is made of differentiated cells that have lost their ability to divide.
In the 1970s, public opinion favored cleaning up the environment. Since the 1980s, some members of Congress and industry leaders have fought against environmental laws that regulate the amount of pollution that can be added to the environment. Are they working in the best interests of the public or of corporations?
Answer:
They are working in the best interests of corporations
Explanation:
Corporations and industries are responsible for a large percentage of environmental pollution being witnessed in several regions of the world. The pollutions have negative consequences for the environment and the organisms living in it, including humans. Hence, formulating laws to regulate the amount of pollution that can be added to the environment is in the best interests of the public. Any person that fights against these laws is likely working in the interests of industries and corporations and not the public in its entirety.
The jellylike substance that holds everything in place inside all cells is called the....
Answer:
Cytoplasm
Explanation:
Answer:
Cytoplasm
Explanation:
Cytoplasm is the semi fluid gel like substance of a cell that is present within the cellular membranes and surrounds the nucleus.
(I need help on math so pls lmk if your willing to help)
Jimmy is planning on making a new deck in his backyard this spring. 1. He must wait until the ground reaches a temperature of 6 degrees Celsius before he can begin building. Jimmy knows that, on average, the temperature increases 2 degrees Celsius per week in the spring. If the temperature is -12 now, how long must Jimmy wait before he can begin work?
Answer:
9 days
Explanation: