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Andrews [41]
3 years ago
5

What molecule is responsible for carrying the acetyl group from pyruvate into the citric acid cycle?

Biology
1 answer:
Airida [17]3 years ago
6 0
<span>During Glycolysis, one molecule of glucose is converted into two molecules of pyruvic acid in the cytoplasm of the cell. Pyruvic acid is then moved into the inner matrix of the mitochondria, which is the organelle within the cell responsible for the generation of energy. The pyruvic acid molecule is converted into acetyl Co-A, which is the molecule that enters the Krebs Cycle. In the Krebs Cycle, acetyl Co-A is attached to oxaloacetate acid to form citric acid; the Krebs Cycle is alternately known as the citric acid cycle.</span>
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Answer:

1. Observe

2. Research

3. Geology

Explanation:

Hope this helped!

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2 years ago
Scientific knowledge is always changing. At one time, the kingdom was the
Naddika [18.5K]

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D

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Organisms can be separated into different classifications due to many differences phenotypically or genetically. As we have progressed, research has shown differences allowing us to see bacteria and archaea as different organisms.

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3 years ago
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Imagine you are investigating the case of a young man who seems not to respond to stressful situations the same way most people
anzhelika [568]

Answer:

The answer of the human body to stress, and stressful situations, including to conditions that may trigger the stress response of the body, is a pretty complex one involving the nervous system as a whole, and the adrenal glands, which are responsible for producing two of the most important stress-related hormones. These hormones: glucocorticoids and corticoids (cortisol), will in turn affect all body systems in different manners to produce the necessary effects, to respond to the perceived "threat".

In essence, we have a pathway from our brains, to our adrenal glands, known as the hypothalamic-pituitary-adrenal (HPA) axis. In this axis, several genes that are geared towards stress responses activate (CRHR1 and CRHR2, among others) and produce CRH (Corticotropic releasing hormone), which in turn is directly related with stimulating the production of cortisol when there is stress. However, because our bodies are not meant to be in a constant state of alertness and preparation, because the different organs of the body are negatively affected, there are also pathways that will turn off this response and lower the stressful production of cortisol.

In this particular person, although he has been exposed to the same stressor as the others, he does not have precisely the same reactions to it as the others. It is important to note one thing here, and that is, that the stressor offered to these people were videos of stressful situations, and what is known about the stress response is that one vital part of it is visual exposure to different factors, including light, and images. These exposures cause the HPA axis to initiate a response through CRH production. However, it seems that in this young man, although most of the responses are present, not all of them are. So one solution could be that he has a mutation in his genes in his HPA axis, and therefore CRH is not being produced in enought levels to stimulate sufficient levels of cortisol production. However, there are also other genetical reasons why, and these could be many.

6 0
2 years ago
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Vlad [161]

Answer:

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Explanation:

3 0
2 years ago
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jasenka [17]

Answer:

D) Folded mountain with jagged, rough edges

Explanation:

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So, the force with which the two plates collided resulted in the formation of folded mountains that rose upward. The peaks of these mountains were jagged, rough, and uneven.

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