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2 years ago

Which two structures produce energy that cells can

Biology

1 answer:

wariber [46]2 years ago

4 0

Answer:

MRCORRECT has answered the question

Explanation:

endoplasmic membrane. The energy made by the mitochondria is in the form of a chemical called adenosine triphosphate or ATP for short. ATP is anenergy currency that every cell in our body can use and it keeps us alive. The machinery that the mitochondriause to make ATP is called the electron transport chain

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The molecular clock has limited usefulness for estimating divergence times among species in part due to the saturation of DNA se

Greeley [361]

Answer:

In highly diverged lineages, the substitutions process will occur at sites that have been substituted previously.

Explanation:

Molecular clock uses the mutation rate to reduce the time in prehistory when the life forms are diverged. The molecular clock uses the sequence of amino acids and nucleotide sequence for the DNA.

This clock does not measure any time but the number of mutations, and other changes over certain time. Sometimes its useful property might be limited due to the highly diverged lineages.

8 0

2 years ago

How do mutations cause variation?

Fofino [41]

Answer:

Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.

5 0

2 years ago

The study of psychoneuroimmunology suggests that when a stressful situation is encountered, several biological reactions occur,

zhenek [66]

Answer: d) lightheadedness or unconscious episodes.

Explanation:

There are several ways the body responds to stress but one method used by psychologists to measure this response is Hans Selye's general adaptation syndrome. This occurs in 3 stages:

1. The alarm reaction. This occurs when the stressor is first presented resulting in the RELEASE OF HORMONES from the adrenal gland into the blood stream. The hormone in turn cause sympathetic nervous system activation and increase energy levels, INCREASE RESPIRATION, increase muscle tension, reduce sensitivity to pain, slow down the digestive system, and cause a RISE IN BLOOD PRESSURE.

2. The stage of resistance- this occurs till the stress is removed.

3. The stage of exhaustion

7 0

2 years ago

Read 2 more answers

If Avery had observed transformation using only the extracts containing degraded DNA, degraded RNA, and degraded protein, but NO

Leokris [45]

Answer:

Polysaccharides are the genetic material.

Explanation:

Avery did not observe transformation using the extracts containing degraded DNA. On the other hand, extracts with degraded RNA, proteins, and polysaccharides exhibited transformation. Therefore, he concluded that DNA is the genetic material responsible for transformation. If he would have observed the process of transformation using extracts containing degraded DNA but not with degraded polysaccharides, he might have concluded that "polysaccharides were the genetic material responsible for the process of transformation."

4 0

3 years ago

Which of the following shows the correct order in which sound information travels through the ear?

kkurt [141]

Answer:

eardrum,ossicles,cochlea nerve, cochlea

I hope this helps

8 0

2 years ago