UV light _____ vitamin D.
A. decreases the body's production of
B. increases the body's production of
C. destroys existing
D. has no effect on
E. alters the structure of
B. increases the body's production of
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Somatic hypermutation occurs only in the ________ regions of rearranged heavy and light chains
A) D B) HV C) J D) V
Based on the results of the experiment, which of the following types of molecules did the bacteriophages most likely inject into the bacteria cells?
(A) Simple carbohydrate (B) Amino acid (C) DNA (D) Polypeptide
Which ion is pumped into guard cells in order to make them more flaccid?
a. Na+ b. Ca2+ c. K+ d. H+
The mechanism by which the body adjusts the efficiency of its energy utilization in response to its levels of body fat has been termed:
(a) fat-induced thermogenesis (b) body fat-induced homeostasis (c) energy use-induced homeostasis (d) diet-induced thermogenesis