The homeostatic interaction between the endocrine system and which other system is demonstrated by
aldosterone regulating salt-water balance?
a. digestive system
b. circulatory system
c. reproductive system
d. urinary system
e. skeletal system
D
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The amino acids in a polypeptide chain are connected by:
A) covalent bonds. B) glycosidic bonds. C) peptide bonds. D) both a and c.
The autonomic nervous system ____
a. relays commands to somatic nerves b. is part of the central nervous system c. relays commands to smooth muscles d. is under voluntary control e. responds to sensation in the skin
Relative to prokaryotic cells, eukaryotic cells are usually ________
A) larger and more complex B) smaller and simpler C) larger and equally complex D) smaller and more complex
The virulence factor of Vibrio cholera, which is primarily responsible for the signs and symptoms of cholera, is
A) the presence of polar flagella. B) its ability to survive in freshwater. C) its ability to form biofilms in saltwater. D) its activation of certain genes within the human body. E) its ability to produce a potent exotoxin.