Skeletal muscles contract in response to _____
a. acetylcholine (ACh)
b. dopamine
c. serotonin
d. endorphins
A
Biology & Microbiology
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Nondegradable
What will be an ideal response?
Biology & Microbiology
The process by which a single cell differentiates into a specialized multicellular organism is
A. heredity. B. coordination. C. development. D. multicellularity.
Biology & Microbiology
DNA codes for the sequence of amino acids in the primary structure of a protein, but not for sugars or lipids. This is because
What will be an ideal response?
Biology & Microbiology
Groups of tissues that perform a specific body function make up:
A) the integument. B) an organ. C) a tissue. D) a gland. E) an organ system.
Biology & Microbiology