If the concentration of thyroid hormone is
high,
a. the secretion of thyroid-releasing hormone
is inhibited.
b. the secretion of thyroid stimulating
hormone is increased.
c. calcitonin production is increased.
d. resting metabolism decreases.
e. more than one of these occurs
A
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Four of the five outcomes listed below are related to
the accumulation of oxygen in the atmosphere. Select the exception. a. Further chemical origin of living cells stopped. b. Chemical attacks by oxygen radicals stopped. c. Aerobic respiration evolved. d. With few exceptions, complex organic compounds could no longer form. e. Some cells detoxified oxygen by using it to accept electrons.
Because embryonic stem cells can form any tissue in the human body, they are termed
_____________; adult stem cells, on the other hand, are termed ______________. Fill in the blank(s) with the appropriate word(s).
Classification of the world's major terrestrial biomes is based on the dominant forms of plant life
Indicate whether the statement is true or false
RNA differs from DNA in that RNA contains the sugar ________
Fill in the blank(s) with correct word