What makes a cell responsive to a particular hormone?
A) The location of the target cells in the body
B) The presence of a receptor for that particular hormone
C) The location of the gland that secretes the hormone
D) The site where the hormone is secreted
E) The chemical properties of the hormone
B
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What is absent in thin skin?
A. The reticular layer B. The stratum corneum C. The stratum lucidum D. The papillary layer E. The hypodermis
87. Most of the fixed acid in our body comes from
A. the oxygen we breathe. B. acid absorbed from the GI tract. C. loss of bicarbonate in feces. D. lactic acid from muscle.
Riboswitches are folded RNAs that act as switches to turn protein synthesis on or off in response to ________
A) specific codes from the DNA B) changes in the environment C) the presence or absence of ubiquitins D) specific tRNAs
The results of metabolic processes usually add:
a. relatively weak bases to the blood b. relatively strong bases to the blood c. relatively weak acids to the blood d. relatively strong acids to the blood