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

Biology & Microbiology

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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

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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

Biology & Microbiology

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?

Biology & Microbiology

Alcohol increases urine output by inhibiting the release of ADH

Indicate whether the statement is true or false

Biology & Microbiology