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2 years ago

Which of the following examples listed below illustrates homeostasis maintained by a negative feedback?

Biology

1 answer:

fiasKO [112]2 years ago

5 0

The right answer to this question is option D. Changes in the response of the hair follicle to dihydrotestosterone

First of all, what is a negative feedback? Well, it's something that happens when there's a lot of something inside your blood, this "something" could be a hormone for example.

But what does the negative feedback do to your system? That's simple, for example, if there's too much of a hormone, your blood will take that into the place where it was made in the first place, and that's how your body will know that you don't need that hormone to be produced anymore, because once that happens, a signal is send to your brain that warns it that that hormone is not needed anymore, then the production stops or slows down.

So, about the question, option D is the right one just because of that, the body is producing a lot of a hormone, in this case it's dihydrotestosterone, and the brain recognized it after this hormone reaches the right point, and then the production slows down.

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If you were to add one of the eight citric acid cycle intermediates to the culture medium of yeast growing in the laboratory, wh

raketka [301]

Answer:

B) The rates of ATP production and carbon dioxide production would both increase.

Explanation:

The citric acid cycle is the second stage of aerobic cellular respiration. It includes complete oxidation of acetyl CoA into CO2 and H2O. During the citric acid cycle, NAD and FAD serve as electron acceptors. Reduction of these reducing powers forms NADH and FADH2 which in turn enter the electron transport chain for their oxidation and drive the process of as many as 32 ATP molecules by oxidative phosphorylation. On the other hand, fermentation forms of 2 ATP molecules and a few or no CO2 molecules.

Therefore, if one of the eight intermediates of the citric acid cycle is added to the medium, the yeast cells would perform aerobic cellular respiration and would form more CO2 and ATP molecules than the ones formed during the process of fermentation.

7 0

2 years ago

In one row in the table, the data for the three trials is inconsistent. Which table cell contains data that are inconsistent for

salantis [7]

Answer: A

Explanation:

The cell for trial 2 with a lot of water. Trust me

6 0

2 years ago

Explain what friction corollas and a low pressure gradient does to an air parcel?

Kipish [7]

Answer with Explanation:

Coriolis Force - refers to the fictitious force that acts perpendicularly to the direction of a rotating motion.

Air parcel - refers to a body of air that is "imaginary."

Pressure gradient - the change in pressure across a given distance.

Pressure gradient force - the net force that is being directed from high pressure to low pressure.

When an air parcel is at rest, the pressure gradient force acts upon it. It will then move from high pressure to low pressure.

However, when the air parcel starts to be in motion, its direction will be changed with the help of the Coriolis force. Thus, it moves to the right side of the Northern hemisphere.

Once the speed of the wind increases, the change in direction of the air parcel increases. This happens until the pressure gradient force and the Coriolis Force are equal in magnitude. When this happens, the wind will start blowing parallel to the points of equal pressure. The wind will now then be referred to as in "geostrophic balance."

When friction happens, the geostrophic balance breaks. The flow of the wind will be slowed down. This means that the Coriolis force will also be lessened. The air parcel will then move towards the lower region.

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2 years ago

The diagram above depicts a karyotype of an individual human. Which of the following statements concerning the karyotype in the

ololo11 [35]

Answer:the diagram illustrates the results of non disjunction during gamete formation.

Explanation:

7 0

2 years ago

Which structure of a paramecium holds a "reserve copy" of all the cell's genes?

nadya68 [22]

The structure of a paramecium that holds a "reserve copy" of all the cell's genes is the micro nucleus.
The micro nucelus is one of the two kinds of nuclei the paramecium has. The other is the large ellipsoidal nucleus called a macronucleus. Every paramecium must have at least one small nucleus called a micronucleus. The micronucleus is a storage site for the germline genetic material of the organism.

4 0

2 years ago

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