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2 years ago

Which of the following best summarizes how hormone levels are controlled?

Biology

1 answer:

anastassius [24]2 years ago

7 0

Answer:

Option A, Hormones are controlled by a feedback loop; information about a system is sent back to the controller of the system to improve its function.

Explanation:

Negative feedback loop controls the hormone production and release. This is done by eliciting the release of substances till a certain level after which the stop signal is activated thereby preventing further release. By this method, concentration of hormones in blood is maintained within the narrow range.

For example – Thyroid hormones is released when the anterior pituitary signals the thyroid. This continues till the hormones in the blood reach the threshold level. Once the threshold level is reached, hypothalamus receives a feedback and then signals anterior pituitary to inhibit further signaling to the thyroid

Hence, option A is correct

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How do energy and information cells relate to eachother

Dennis_Churaev [7]

Answer:

well you could be aleck and say they are both cells

7 0

2 years ago

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Which of the following is least likely to increase the rate of diffusion

andriy [413]

<span>The movement of molecules from an area of high concentration to an area of low concentration is the situation is the least likely increase the rate of diffusion. The rate of diffusion will increase or will be faster as the place temperature increases.</span>

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2 years ago

In clover plants, the pattern on the leaves is determined by a single gene with multiple alleles that are related in a dominance

igomit [66]

Answer:

The correct answer is -

a. 7

b. 7 (p1p1, p1p2, p1p3, p1p4, p1p5, etc

c. p7 is abundant

Explanation:

According the question the dominance of the big leaves is p7 > p6 >p5 >p4 >p3 >p2 >p1 where 1 represent least dominance and 7 represent most dominance

let represent the phenotype with the numbers 1 to 7 and genotype with a combination of these numbers so the genotype in respect of phenotype would be :

p7p7,p7p6, p7p5, p7p4, p7p3, p7p2, p7p1 - most dominant 7

p6p6, p6p5, p6p4, p6p3, p6p2, p6p1 - 6

p5p5, p5p4, p5p3, p5p2, p5p1 - 5

p4p4, p4p3, p4p2, p4p1 - 4

p3p3, p3p2, p3p1 - 3

p2p2, p2p1 - 2

p1p1- 1 least dominant

Thus, there are 28 different combinations or patterns of genotypes. 7 phenotypes patterns.

6 0

2 years ago

Surfactants work by ________. Group of answer choices blocking transport out from the organism blocking transport into the organ

Dmitriy789 [7]

Answer:

disrupting membrane integrity

Explanation:

Surfactants work by disrupting membrane integrity. Surfactants disrupt cell membrane integrity by absorbing at the cell membrane and destroying the cell membranes bilayer thus lowering the surface tension of the cell which results in leaky spots resulting in the cell being more permeable.

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2 years ago

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Callie did a lab during which she investigated the difference in cellular respiration rates between two different types of corn:

lisabon 2012 [21]

Answer:

I might be wrong but im guessing 600

Explanation:

Since there is one molecule of glucose used per 6 molecules of carbon dioxide released, if you have 100 molecules of glucose, then you multiply the carbon dioxide by 100 which is 600. Thats what I would say but I might be wrong.

3 0

2 years ago