Answer:
bone is a substance that forms the skeleton of the body
ở một loài thực vật, xét 2 cặp gen phân li độc lập A,a và B, b, mỗi gen quy định 1 tính trạng, alen trội là trội hoàn toàn. Tiến hành mmotj phép lai giữa hai cây, thu được F1. Thep lý thuyết, kiểu hình mang hai tính trạng trội ở F1 không thể chiếm tỷ lệ:
A: 12,5% B: 37,5%
Consider a mixture of bacterial species from the same genus, such as Staphylococcus. Some members of this genus are harmful pathogens, while others are not. Would a selective medium alone be a good tool to separate the harmful species from the non-harmful species
Answer:
No. There are different types of media that may result useful to separate this species. Moreover, differential media can also be used to differentiate closely related species (e.g., by the change of color in the medium)
Explanation:
A selective media is a type of media capable of selecting for the growth of specific microorganisms while inhibiting the growth of others. For example, if a bacterium is resistant to an antibiotic (e.g., ampicillin), then this compound can be added to the medium in order to select bacteria that are resistant and simultaneously inhibit the growth of susceptible bacteria. Moreover, a differential media is a media that contain chemical indicators that allow certain microorganisms to be visually identified by the appearance of the colony and/or its surrounding media. Differential media have into account certain biochemical characteristics of target microorganisms (e.g., the change of color in the medium which is associated with the ability of the microorganism to ferment sugar molecules).
Which gas is exhaled along with used air?
SCIENCE QUESTION... ☺️
Explanation:
When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide.
What could a dog living now and a cat living thousands of years ago have in
common?
A. They have the same bone structure.
B. They have some of the same matter.
C. They have the exact same DNA.
D. They have the same amount of energy.
SUBMNT
Answer:
b
Explanation:
not all dna is the same and energy depends on diet along with cats and dogs having different bone structure.
A population has adopted an evolutionarily stable strategy (ESS) in regards to cooperation or defection. If a new mutant strategy appears that causes an opposite behavior from the norm, which of the following will result?
A. The mutant strategy will not be able to increase in numbers in the population under the influence of natural selection.
B. Antagonistic pleiotropy will allow an equilibrium in which both strategies are maintained in the population.
C. The members of the population using the original strategy will act with aggression toward those exhibiting the mutant strategy.
D. The evolutionarily stable strategy will be displaced because of natural selection in favor of the mutant strategy.
E. Natural selection will maintain the mutant strategy because the variation in strategy may be useful in future environments.
Answer:
A. The mutant strategy will not be able to increase in numbers in the population under the influence of natural selection.
Explanation:
An evolutionarily stable strategy (EES) can be defined as a strategy that is competitively superior to others strategies and cannot be replaced or invaded by any other strategy through natural selection, resulting in punishment for those who deviate from it. Thus, an EES may confer a higher reproductive/adaptive fitness than alternative strategies when it is adopted by most members of the population. Individuals having an ESS are 'spiteful' because they act not only to increase their payoffs but also to decrease the payoffs of their competitors. An EES is resistant to low levels of mutation when all individuals in the population have the same strategy. In game-theoretical terms, an ESS is a strategy such that if all the members of a population adopt this strategy, then no mutant strategies could invade the population under natural selection. In consequence, when all individuals of a population adopt an EES, mutant phenotypes cannot invade and displace the ESS.
Look at the picture of a leaf-cutter ant.
Based on this picture, which prediction can be made about leaf-cutter ants?
A. They eat trees for energy.
B. They produce hundreds of offspring at a time.
C. They cannot see color.
Answer:
The Answer is -They are strong enough to lift an entire leaf
Explanation:
Based on the picture of a leaf-cutter ant. The prediction that can be made about leaf-cutter ants is they are strong enough to lift an entire leaf. The correct option is D.
What is a leaf-cutter ant?Leaf-cutter ants develop their fungus crop by using leaves as fertilizer. By providing freshly cut leaves, they develop fungal gardens while guarding against pests and molds and removing dead materials. The fungus serves as a food supply for the ant larvae in exchange.
These eager ants may seem to bite off more than they can chew, but in reality, they are capable of carrying leaf fragments that are nearly 50 times heavier than themselves. That's like a person pushing a car around.
Therefore, the correct option is D. they are strong enough to lift an entire leaf.
To learn more about leaf-cutter ants, refer to the link:
https://brainly.com/question/29309882
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Hexokinase is an enzyme that catalyzes the ATP‑dependent phosphorylation of glucose to glucose‑6‑phosphate.
a. True
b. False
Answer: The statement is TRUE
Explanation:
HEXOKINASE is an enzyme that catalyzes the phosphorylation of glucose to glucose‑6‑phosphate in glycolysis. The main function of glucose is to provide energy for the tissues. The basic pathway through which energy is gotten from glucose is through GLYCOLYSIS. The glycolytic pathway is made up of enzyme catalyzed reactions that leads to the conversion of glucose to pyruvate in the presence of oxygen or lactate in the absence of oxygen.
The first step in glycolysis is catalyzed by HEXOKINASE, an enzyme with broad specificity that catalyzes the phosphorylation of six-carbon sugars. Hexokinase phosphorylates glucose using ATP as the source of the phosphate, producing glucose-6-phosphate, a more reactive form of glucose.
Therefore the above statement is TRUE.
it is responsible for being bidirectional of the cell membrane
Answer:
I believe it is Cholestral
Explanation:
Back to the cute little pigs. What are the possible parents of the following groups of guinea pigs. Give all possibilities. You do not need to show Punnett Squares, just the possible parents. There may be more than I answer for each. Case 1: 50 % of the offspring are black Case 2: 75 % of the offspring are black Case 3: 50 % of the offspring are hybrid black Case 4: 100 % of the offspring are black Case 5: 100 % of the offspring are white Case 6: 50 % of the offspring are white Case 7: 25 % of the offspring are white
Answer:
Case 1 ⇒ Bb x bb ⇒ F1 = 50% Bb, black + 50% bb, white
Case 2 ⇒ Bb x Bb ⇒ F1 = 75% Black + 25% white
Case 3 ⇒ Bb x Bb ⇒ F1 = 25% BB + 50% Bb + 25% bb
⇒ Bb x bb ⇒ F1 = 50% Bb + 50% bb
Case 4 ⇒ BB x BB ⇒ F1 = 100% BB Black
⇒ Bb x BB ⇒ F1 = 50% BB + 50% Bb = 100% Black
⇒ bb x BB ⇒ F1 = 100% Bb black
Case 5 ⇒ bb x bb ⇒ F1 = 100% bb white
Case 6 ⇒ Bb x bb ⇒ F1 = 50% Bb black + 50% bb white
Case 7 ⇒ Bb x Bb ⇒ F1 = 75% black + 25% white
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
In snapdragons petal color is an incomplete trait. If RR results in a red flower and rr results in white flowers, Rr would result in ____________ flowers. Group of answer choices red flowers with white splotches pink striped flowers red and white flowers
Answer:
Pink Striped flowers
Explanation:
Incomplete traits result in a "mixing" of 2 traits. So with a Rr individual, there will be pink striped flowers.
Answer:
Rr would result in a pink and white flower.
Explanation:
The traits of each parent are neither dominant or recessive. The alleles do not blend, but partial dominance is often referred to as “blending” because traits are mixed and appear to be “blended.” In this case, it will be BOTH pink and white.
What is the most likely reason that nonmetals are electrical insulators?
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in
order to fill their valence shells.
O Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their
valence shells,
O Since all nonmetals have valence shells that are full, they hold electrons tightly to avoid changing.
Since all nonmetals have valence shells that are completely empty, they do not attract or release any electrons.
Mark this and return
Save and Exit
Nexo
Submit
Answer: Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Explanation:
Electric current can flow freely in a conductor but in an insulator, it cannot flow freely.
The most likely reason that nonmetals are electrical insulators is since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Answer:
Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Explanation:
How do organisms have a negative impact on the water cycle? And how can they affect other organisms with your answer? Please help.
a) Eukaryotic cell : Nucleus :: Prokaryotic cell : ______
Biology help please!!!!
Answer:
Disaccharides are when 2 monosaccharides join together. It is formed by condensation. A water molecule is released. Example include Maltose or sucrose.
Polysaccharides are long chains of monosaccharides joined together. It is a good store of energy. Examples are starch or glycogen
Explanation:
Which of the following is true about evaluating an experiment?
A)Evaluating an experiment allows the investigator to find errors and make improvements.
B)Evaluating an experiment is not important or required.
C)Evaluating an experiment can change the prediction.
D)Evaluating an experiment can make it more confusing.
Answer:
The correct answer is - A) Evaluating an experiment allows the investigator to find errors and make improvements.
Explanation:
Evaluation is the process in any experiment that helps in improving the analysis and remove missing components and errors to get better results. It also checks if all the process is included and running properly without error.
One should constantly be evaluating his or her experiment. It includes assessing how the experiment is going as you carry it out, what could have been improved if it was to be carried out again and how can eliminate any erros.
25 POINTS!! If you chemically synthesized the DNA molecule ATGCCGAATG from individual nucleotides, what would be present in solution besides the DNA?
A. phosphate
B. RNA
C. lipids
D. glucose
Answer:
option a
Explanation:
Record the disorder revealed in the karyotype below.
I need help
Answer:
i don't have that alien eys
you do have
in one word this photo is not clear for my eyes
[tex]1 \sqrt{ \frac{ \frac{24 \frac{ \frac{21150 \sqrt{ \cot( \alpha ) } }{?} }{?} \times \frac{?}{?} \times \frac{?}{?} }{?} }{?} } [/tex]
What did you remember to include in your paragraph?
Fats provide long-term energy storage.
Fats provide insulation and protection.
Phospholipids are the main component of cell membranes.
Waxes provide a waterproof coating on leaves and feathers.
Steroids are part of cell membranes and chemical messengers in the bod
Answer:
all of them are correct but I think option 2 is most likely
Answer:
all
Explanation:
how does fertilization of angiosperm differ from fertilization in bryophytes
Answer:
Fertilization in flowering plants happens through a process called pollination. Pollination occurs when pollen grains from the anther land on a stigma. ... Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed
Proteus vulgaris has a doubling time of roughly 28 minutes. If an initial population of 500 cells is allowed to grow for 6 hours in ideal conditions, what will be the final population? Use three significant figures for your final answer.
Answer: The final population of Proteus vulgaris after 6 hours is [tex]3.71\times 10^{6}cells[/tex]
Explanation:
We are given:
Proteus vulgaris divides and doubles every 28 minutes
Total time given = 6 hours = 360 min (Conversion factor: 1 hr = 60 min)
Number of times Proteus vulgaris doubles in 6 hours = [tex]\frac{360min}{28min}=12.857times[/tex]
Calculating the number of bacteria after 6 hours under ideal conditions:
We are given:
Initial population = 500 cells
Number of times it doubles = 12.857 times
Final Proteus vulgaris population = [tex]500\times 2^{12.857}=3709476.8=3.71\times 10^{6}cells[/tex]
Hence, the final population of Proteus vulgaris after 6 hours is [tex]3.71\times 10^{6}cells[/tex]
Which characteristics is common to all three groups of reptiles?
They use claws for defense.
They protect their eggs.
They have moveable eyelids.
They are ectotherms.
They are ectotherms.
hope it is helpful to you
Ectotherms because they are all cold blooded
If the initial ratio of 14C to 12C in the bones was one part per trillion (the current ratio of 14C to 12C in the atmosphere), approximately what ratio would we expect in bones that come from wolves trapped 28,500 years ago
Answer:
For the bones of wolves trapped 28,500 years ago, the approximate ratio of carbon-14 to carbon-12, 14C to 12C, will be one part per 32 trillion.
Explanation:
Radioactive isotopes of elements are useful for many purposes. Carbon has three isotopes, carbon-12, carbon-13, and carbon-14. Of these, carbon-14 is radioactive.
The half-life of an carbon-14 is used to determine the age of fossils in a process known as carbon-dating.
Carbon-14 has a half-life of approximately 5700 years. The half-life being the time for half the amount of the radioactive nuclei present in a radioactive element to decay.
The number of half-lives in 28500 years = 28500/57000 = 5 half-lives
This means that the original amount of atoms present in the atoms has undergone radiactive decay five times.
The ratio of the original amount of 14C to the present amount of 14C = (1/2)⁵ = 1/32
Ratio of 14C to 12C that will be found in the bones = 1/32 × 1/ 1 trillion = 1/32 trillion.
Therefore, for the bones of wolves trapped 28,500 years ago, the approximate ratio of carbon-14 to carbon-12, 14C to 12C, will be one part per 32 trillion.
1. Explain how an environment would rebound after a volcanic eruption (include the type of
succession and pioneer species).
Explanation:
Volcanoes produce geothermal energy, which are used to generate heat. When a volcanoes erupts, a large amount of ash is ejected. This ashes can be extremely damaging to the environment in the brief period, but over time, the ash layer, which includes many valuable minerals, will be transformed into a highly productive soil.
economic importance of mosquito larva list five
Explanation:
economic importance of mosquito larva are
Mosquito larvae grow by consuming microorganisms such as algae and microbes that decompose decaying plant material. Larval mosquitoes contribute to aquatic food chains by serving as food sources for many predators, including fish and birds.i hope it will help you
Match each of the following skull features with its correct bone.
a. styloid process
b. infraorbital foramen
c. sella turcica
d. foramen magnum
e. coronoid process
f. crista galli
1. ethmoid bone
2. sphenoid bone
3. temporal bone
4. mandible
5. maxilla
6. occipital bone
Answer:
The left column contains structures of the bones that belong to the right column.
a) styloid process - 3) temporal bone
b) infraorbital foramen - 5) maxilla
c) sella turcica - 2) sphenoid bone
d) foramen magnum - 6) occipital bone
e) coronoid process - 4) mandible
f) Crista galli - 1) ethmoid bone
Explanation:
The inferior part of the petrous temporal bone forms the styloid process that allows the stylohyoid, stylopharyngeus, and styloglossus muscles to attach with styloid ligaments.
The infraorbital foramen is the opening of the maxillary bone of the skull
sella turcica is a saddle-like structure in the body of the sphenoid bone of the skull.
The foramen magnum is the lower part of the cranial foss that allows the connecting brain and spinal cord and it the opening
The coronoid process is shoulder joint as well and required mandibles in the skull to form.
Crista galli arises from ethmoid bone that is thick and midline triangular but smooth process.
Plants are susceptible to bacterial infections, which can damage their structure or even kill them. Which of the following would be the best antibiotic to treat a plant that is infected with bacteria?
A) a drug that interferes with mitochondria function.
B) a drug that disrupts cell wall structure and function.
C) a drug that destroys the central vacuole.
D) a drug that blocks gene expression in circular chromosomes.
Answer:
The correct answer is: D) a drug that blocks gene expression in circular chromosomes.
Explanation:
Antibiotics are the drugs that are mostly used when it comes to treating bacterial infections because of their effective mechanisms in killing bacteria and/or preventing their spread.
Bacteria have the ability to colonize and infect different organisms by making use of highly diverse mechanisms, some of which involve the use of toxins or the inhibition of the host's immune system.
Bacteria are prokaryotic individuals - instead of having a nucleus containing DNA in multiple chromosomes like eukaryotes have, they have one single circular chromosome that holds all or most of all their genetic information. If we wanted to treat a plant (which is a eukaryotic being) for a bacterial infection, we should aim to block the expression of genes in circular chromosomes, which is a distinct feature in bacteria.
If we were to give the plant a drug that interferes with mitochondria function or destroys the central vacuole, we would only be affecting plant cells and probably killing the plant. A drug that disrupts cell walls would affect the bacteria but would kill the plant as well (both organisms have cell walls). The only viable option out of the mentioned is using a drug that inhibits gene expression in circular chromosomes.
Which of the following models describes the way in which DNA Replication occurs?
semiconservative
dispersive
random
conservative
Answer:
semiconservative
Explanation:
The semiconservative model of DNA replication states that only one DNA strand is used as template for the synthesis of the other new strands. In DNA replication, the DNA molecule is first unwind into a replication fork containing two single strands of DNA.
After unwinding, DNA polymerase synthesizes new complementary strands of DNA using each of the old strands. So in essence, the two DNA molecules after replication consists of one old and one new strand of DNA. This is basically the semi-conservative model of DNA replication.
What is a population?
A. a group of organisms of different species interacting with each other and the environment
B. a single separate organisms separate from others of the same kind interacting with it's environmment
C.all the organisms of the same species who live in a specific environment and are capable of interbreeding.
D.a group of organisms and the non-living components interacting as a system
Answer:
What is population?
A group of organisms of different species interacting with each other and the environment is called populatin.
Which statement accurately identifies the order of tissues pictures left to right in the microscopic image?
a) Epithelial cells, smooth muscle, connective tissue
b) Connective tissue, epithelial cells, smooth muscle
c) Epithelial cells, connective tissue, smooth muscle
d) Connective tissue, smooth muscle, epithelial cells
Answer:
The correct answer is - d) Connective tissue, smooth muscle, epithelial cells.
Explanation:
The connective tissues are the tissue layers that protect the outside of arteries and veins. The thick outermost layer of a tunica adventitia and other, made of connective tissues.
The middle layer that has tunica media that s made up of outer connective and smooth muscles in the inner or middle and in the innermost layer is made up of epithelial layer.
As per the image given the statements that describe the tissues from the left to right in a microscopic image are connective tissue, smooth muscles, and epithelial cells.
The connective tissues support and protect and give stricture. The smooth muscles are involuntary non straighter muscles. The epithecal cells that line the surface of the body.Hence the option D is correct.
Learn more about the statement accurately identifies.
brainly.com/question/23999747.
In addition to their role as building blocks for proteins, amino acids are used as precursors for the biosynthesis of a wide variety of molecules. Match the amino acids with the molecules for which they act as precursors. Histamine Epinephrine Scrotonin Glutathione Heme NAD(H)tyrosine histidine eysteine glycine glutamate tryptophan
Answer:
Amino acids are the building blocks or monomers of proteins. These are the molecules that act as the precursors for the biosynthesis of various hormones some other molecules of our body. these amino acid molecules for by the process of protein synthesis.
The given amino acids are precursors of the following molecules-
1. Histamine - Histidine
2. Epinephrine - Tyrosine
3. Serotonin - Tryptophan
4. Glutathione - Cysteine, Glutamate and Glycine
5. Heme - Glycine
6. NAD(H) - Tryptophan