This neurotransmitter stimulates skeletal
muscle contraction, slows cardiac muscle
contraction rate, and affects mood and
memory. This neurotransmitter is
a. acetylcholine.
b. epinephrine.
c. dopamine.
d. serotonin.
e. an endorphin
A
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The presence of circular DNA in mitochondria and chloroplasts suggests that these organelles evolved from ____
a. bacteria b. nuclei c. single celled eukaryotes d. anaerobic microorganisms e. archaea
Vectors such as pUC18 and others of the pUC series contain a large number of restriction enzyme sites clustered in one region. Which term describes this advantageous arrangement of restriction sites?
A) multiple cloning site B) ?-galactosidase C) complementation D) palindrome E) consensus sequence
Initial attempts to culture cells demonstrated that blood serum but not blood plasma provided factors that increased the viability and proliferation of the cultured cells
What will be an ideal response?
Alcohol increases urine output by inhibiting the release of ADH
Indicate whether the statement is true or false