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umka21 [38]
3 years ago
5

When a duck dives into cold water, the capillaries in its skin constrict and move deeper below the surface of the skin. This rea

ction is an example of
1. transporting nutrients2. transporting oxygen3. maintaining homeostasis4. collecting wastes
Biology
1 answer:
andrey2020 [161]3 years ago
5 0

Answer:maintaining homeostasis

Explanation:

The process of maintenance of relatively constant internal i environment of an organism is called homeostasis.

Therefore the sudden change in the body temperature of the duck in water is adjusted by the deep con striction of the capillaries which retained heat to the internal body structures, and reducing convention to upper body surface , to maintain constant bidy temperature in respective of the change in the external temperature.

This is homeostasis.

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Answer:

Through Mutation

Explanation:

Since our cells are able to produce exact copies of themselves. Thus, until unless some mutation has occurred and affected the ability of the cells to produce exactly similar duplicates copies of the parent cell, there is no way that an individual gets aged.  

Since, mutation affects the mitochondrial DNA it is pretty sure that a mutated cell has affected the longevity of a normal cell and then that mutated cell has produced million other mutated aged cell by replicating itself

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Explanation:

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What is enzyme, a substrate and competitive enzyme inhibition?
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Answer:

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Substrate: A substance or chemical that enter the chemical reaction and is being converted into a new substance  (product).

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Explanation:

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Substrates are the chemicals that undergo a chemical change and produce products.  

For example, Glucose is the substrate for hexokinase enzyme and is converted into glucose 6 phosphate (the product).

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Exercise has different depression-reducing effects. It enables the body to producte endorphins that reduce sensations of pain. Moreover, it changes the  neurotransmitter levels associated with depression (for example, norepinephrine) and it developes a sense of mastery and self-control through regular practice. <em>The SMILE study concludes that aerobic exercise on MDD remission extend the benefits</em> and it might be better than the benefits of antidepressant use.

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