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1 year ago

The growth hormone axis contains at least one example of a negative feedback loop.TrueFalse

Biology

1 answer:

iVinArrow [24]1 year ago

8 0

The growth hormone axis contains at least one example of a negative feedback loop is True.

Hormones are a class of signaling molecules in multicellular organisms that are sent to distant organs by complex biological processes to regulate physiology and behavior. Hormones are necessary for the proper development of animals, plants, and fungi.

Hormones are the body's chemical messengers. They travel to tissues and organs in the bloodstream. They function slowly over time and influence many different processes, including growth and development. Metabolism is how your body gets energy from what you eat.

Hormones play a major role in normal functioning. They control heart rate, sleep cycles, sexual function, and reproduction. Metabolism, appetite, growth and development, mood, stress, and body temperature are all influenced by hormones.

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In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of the allele a is 0. 3. What i

zavuch27 [327]

Here, given-

homozygous alleles 'a' have a frequency of 0.3.

Also the alleles are in equilibrium in a Hardy-Weinberg population. The frequency of individuals that are homozygous for this allele are= 0.49.

The Hardy-Weinberg equilibrium can be defined as the principle which states that the variation in the genetic makeup of a population remains constant and unchanged till there are no external interferences, influencing the population.

Calculation-

$p + q = 1\\0.3 + q= 1\\q= 1- 0.3\\\\q= 0.7$

Then to find the frequency of the individuals homozygous for this allele the following formula needs to be used-

$p^{2} + 2pq + q^{2} =1$

$p^{2} = dominant homozygous frequency\\2pq= heterozygous frequency\\q^{2} = recessive homozygous frequency\\$

Thus, the individuals homozygous for the allele can be calculated by $q^{2} = (0.7)^{2} \\= 0.49$

Learn more about the Hardy-Weinberg equilibrium here-

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2 years ago

How does blood defend against pathogens and toxins

Darina [25.2K]

Blood carries immune system cells, known as white cells or leukocytes. Some examples of white cells are phagocytes and lymphocytes.

Phagocytes ingest and dissolve pathogens, as well as strange particles or dying cells.

Lymphocytes are divided into T cells, B cells, and natural killer cells (NK). B cells produce antibodies to respond to foreign cells, T cells attack pathogens using enzymes and other non-antibodies responses, while NK cells combat tumors and cells infected by viruses.

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1 year ago

What is the meaning of proactive

IRISSAK [1]

Creating or controlling a situation by causing something to happen rather than responding to it after it has happened.

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3 years ago

Read 2 more answers

Although meat lacks cellwalls, repeated freezing and thawing

IgorC [24]

Answer:

Lysosome

Explanation:

Freezer burn occurs due to the sublimation of ice in unprotected meat rich in muscles during long-frozen storage. It appears after thawing. The ice crystals rupture the lysosomes which in turn contain hydrolyzing enzymes.

Leakage of the hydrolytic lysosomal enzyme causes freezer burn and affects the appearance of the frozen meat. The hydrolytic enzymes of lysosomes partially digest the cells which in turn impart bad flavor to the stored food.

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3 years ago

Mitral valve prolapse severe enough to cause regurgitation may directly cause _________________ pressure in the ____________ atr

GenaCL600 [577]

Mitral valve prolapse severe enough to cause regurgitation may directly cause INCREASE pressure in the LEFT atrium. Mitral valve prolapse is a medical condition in which the the two valve flaps of the mitral valve do not close properly, bulging upward into the left atrium. The condition may be mild or severe. Heart surgery may be required in case of the severe one.

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3 years ago