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uranmaximum [27]
3 years ago
7

HELP PLEASE the bottom is for moderators because I have had problems with them deleting my questions

Biology
2 answers:
yulyashka [42]3 years ago
8 0

Answer:

The bottom answer

Explanation:

Darina [25.2K]3 years ago
4 0
The correct answer is definitely the bottom one hope u do well
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Mitochondrial DNA accumulates DNA mutations quickly. Because of this, it would be most beneficial in analyzing the ancestral rel
konstantin123 [22]
The answer would be: <span>A. Mitochondrial DNA is beneficial in both of these cases
</span>
Mitochondrial DNA or mtDNA is DNA that found in the mitochondrial. Mitochondrial DNA only inherited from mother, so it's relatively unchanged than nuclear DNA that mixed from father and mother. 
Mitochondrial DNA has higher mutation rate in animals because it doesn't have repair mechanism like nuclear DNA. These mutations can be used as a clue for how close the relation of an organism to others.
This makes analyzing the ancestral relationship of organisms that closely or distantly related easier.
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3 years ago
What is a lunar calendar and who created it?
Aleksandr-060686 [28]

Answer:

The lunar calendar became the basis of the calendars of the ancient Chinese, Babylonians, Greeks, and Jews

Greek astronomers also devised rules for intercalations to coordinate the lunar and solar years. It is likely that the Roman republican calendar was based on the lunar calendar of the Greeks

7 0
3 years ago
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How do enzymes speed up chemical reaction?
Gekata [30.6K]

In the human body, enzymes function as catalysts to speed up reactions by helping to lower the activation energy needed to start a reaction.

Although some RNA molecules can also act as enzymes, proteins constitute the vast majority of enzymes.

The primary function of enzymes is to decrease the activation energy, or the energy required for a process to start. Enzymes bind to reactant molecules and hold them in place to enable the chemical bond-forming and bond-breaking processes.

The energy of the transition state, which products must pass through in order to become reactants, is reduced by enzymes. 

Instead of using energy to move till they collide at random, they might group the reactants together to make it easier for them to interact. They could direct the process along a different pathway with lower activation energy.

By tying them to the active site, they might place the reactants correctly. As a result, the reactants can interact with less energy because they won't have to fight against intermolecular forces that would normally try to separate them.

Temperature, ionic circumstances, and environmental pH all have an impact on how quickly an enzyme.

For more information on enzymes: brainly.com/question/13981863

3 0
1 year ago
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A 20 – year old man who has cystic fibrosis has a sister who is planning to have a child. The man encourages his sister to see a
Arte-miy333 [17]

Answer:

Man encourages his sister to see a genetic counselor in order to find out that she has the genetic disease or not.

Explanation:

Cystic fibrosis is genetic disease that can transfer from parents to their offspring. This is a very dangerous disease which decrease the life span of patient and the patient die in early stages of life. The man with Cystic fibrosis disease encourage his sister to go to the genetic counselor to find out the presence of disease in her blood because she is planning a baby and we know that this is a hereditary disease so if she has this disease it will transfer to her child.

5 0
3 years ago
Which of the following explosive materials is available in commercial form as fertilizer?
Sveta_85 [38]
<span>ammonium nitrate is found in fertilizers</span>
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