Which factor, when increased, increases metabolic rate to the greatest extent?
A. skeletal muscle activity
B. mental activity
C. dietary caloric intake
D. environmental temperature
E. blood glucose levels
A
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Two or more atoms bonding form a ________.
Fill in the blank(s) with the appropriate word(s).
In a sample of distilled water, a water molecule that has picked up an extra hydrogen ion is called a(n)
A. amphipathic macromolecule.?B. hydroxide ion.?C. hydronium ion.?D. proteinaceous water molecule.
Injured neurons can recover their functional capabilities if
A) the cells can divide enough times to replace those that are lost. B) the oxygen and nutrient supplies are restored. C) the cause of the damage is removed within a period of weeks. D) All of the answers are correct. E) None of the answers are correct.
Two organs that help detect low blood cell numbers and produce hormones to correct this are the ________.
A. kidney and liver B. bone marrow and gall bladder C. liver and spleen D. brainstem and heart