What prevents growth plates from calcifying, preserving their ability to grow?

a. growth hormone
b. calcium
c. phosphate
d. signals from the nervous system
e. thyroid hormone


ANSWER: a

Biology & Microbiology

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If a gene is found in different groups, it is said to be 

A. active. B. variable. C. conserved. D. associational. E. endogenous.

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The statement "The virulence of many pathogens in humans may not be a target of selection itself, but rather an accidental by-product of selection on other traits" describes ________

A) the coincidental evolution hypothesis B) the shortsighted evolution hypothesis C) the trade-off hypothesis D) the energy-balance hypothesis

Biology & Microbiology

Over 6000 species of prokaryotes have been identified. What percentage of the total number of prokaryotic species on Earth does this represent?

a. 1% b. 10% c. 30% d. 90%

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Change in chromosome structure in which the end of a chromosome breaks off or two simultaneous breaks lead to the loss of an internal segment; often causes abnormalities—e.g., cri du chat syndrome.

What will be an ideal response?

Biology & Microbiology