The two body systems that play the largest role in animal behavior are:a
reproductive and digestive.
b. reproductive and endocrine.
c. nervous and reproductive.
d. nervous and endocrine.
e. reproductive and muscular
D
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What is the function of adenylyl cyclase?
A. to form protein kinase A B. to phosphorylate protein kinase A C. to form cyclic AMP D. to phosphorylate cyclic AMP
In humans, sickle-cell anemia is caused by an allele that results in abnormal hemoglobin that sickles red blood cells in certain situations. Individuals who are heterozygous for normal and sickle-cell alleles are protected from malaria; homozygous normal has no protection and homozygous sickle-cell has symptoms such as low tolerance for exertion and a shortened life span. This is an example of
A. stabilizing selection. B. directional selection. C. disruptive selection. D. balancing selection. E. cryptic selection.
Calcium-calmodulin complexes ultimately mediate the phosphorylation of myosin in which of the following cells?
A) smooth muscle B) cardiac muscle C) neurons D) pacemaker E) skeletal muscle
When a nucleic acid undergoes hydrolysis, the resulting subunits are:a
fatty acids. b. amino acids. c. nucleotides. d. carotenoids. e. monosaccharides.