About twelve to twenty-four hours after the previous meal, a person's blood-sugar level normally varies from 60 to 90 milligrams per 100 milliliters of blood, though it may rise to 130 mg/100 ml after meals high in carbohydrates. That the blood-sugar level is maintained within a fairly narrow range despite uneven intake of sugar is due to the body's ability to carry out ______.

A. adaptation
B. inheritance
C. metabolism
D. homeostasis
E. evolution


Answer: D

Biology & Microbiology

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Answer the following statement true (T) or false (F)

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into polypeptides?

a. Golgi bodies b. mitochondria c. ribosomes d. centrioles e. lysosomes

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In statistics, what is a sample?

A) the mean of a population to be studied B) a small subgroup of a population to be studied C) the correlation between the two different experimental factors D) a range of values with a high probability of containing the true mean

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In the pressure-flow mechanism, loading of sucrose from companion cells to sieve-tube elements takes place through _____

A) plasmodesmata B) facilitated diffusion C) sucrose-H+ symporters D) sucrose-H+ antiporters

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