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Kay [80]
4 years ago
12

An example of negative feed back mechanism is when an increased blood levels of estrogen and testosterone will decrease the leve

ls of FSH and LH and thus inhibit spermatogenesis and ovulation. True False
Biology
1 answer:
ElenaW [278]4 years ago
6 0

Answer:

The correct answer is - True.

Explanation:

The negative feedback loop of the endocrine system is that when a hormone is inhibited by its own mechanism or its products. The negative feedback mechanism in the blood is when the level of testosterone and inhibin inhibit the release of the GnRH, LH, and FSH. The low level of GnRH, LH, and FSH affects spermatogenesis and ovulation in males.

In females, the high levels of estrogen and the progesterone exhibit the negative feedback hormone prevents LH and GnRH production by acting on the hypothalamus and inhibit ovulation.

Thus, the correct answer is - True.

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Sally and Alonzo are running a race. The table below shows a comparison of the distance traveled by each runner and the time it
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Answer:

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6 0
3 years ago
All of the following are typical physiological effects of dehydration except _______. Multiple Choice increased blood osmolality
Tatiana [17]

According to the research, all of the following are typical physiological effects of dehydration except <u>osmolality decreased</u>.

<h3>What is dehydration?</h3>

It is the process that refers to eliminating or losing the water that is part of the composition or that contains an organism.

Among the most frequent effects are thirst, osmolality increases, increased sweat rate, dry skin and fatigue.

Therefore, we can conclude that according to the research, all of the following are typical physiological effects of dehydration except osmolality decreased.

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3 0
2 years ago
Transpiration is the uptake of water into plants.
gizmo_the_mogwai [7]
The answer is false. :)
6 0
4 years ago
Question 1. What would be the magnification of a specimen viewed with a compound light microscope that has an objective power of
UkoKoshka [18]
Q1. The answer is 400x.
To calculate the magnification (M), you just need to multiply the objective power (O) and the ocular lens power (OL): M = O * OL
It is given:
O = 40 times
OL = 10 times
Thus,
M = O * OL = 40 * 10 = 400
Thus, the magnification of the specimen is 400 times.

Q2. The answer is transmission electron microscope.

A compound light microscope and dissecting microscope are not useful in observing structures inside the cells because they have not as high resolution as a scanning electron microscope and a transmission electron microscope.However, the scanning electron microscope enables to see structures on the surface of the objects and it would not be possible to look at the internal structures of the cell. On the other hand, the transmission electron microscope allows studying a very thin cross-section of the cell. It is best for looking at internal structures of the cell.

Q3. The answer is: have higher resolution that allows you to view smaller specimens.
The magnification of electron microscopes is up to 1,000,000 times while compound light microscopes have the magnification up to 1,500 times. This means that the electron microscopes allow you to view smaller specimens and provide you higher resolution. Regarding the other choices - they are very expensive and allow you to view only dead specimens in black and white images.
5 0
3 years ago
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