When epidermal growth factor binds to its ________, the receptor phosphorylates itself, triggering a signal transduction pathway.
A. ligand-gated ion channel receptor
B. thermoreceptor
C. G-protein coupled receptor
D. mechanoreceptor
E. enzyme-linked receptor
Answer: E
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The power stroke describes:
A. the pivoting of the myosin head, which causes actin and myosin to slide relative to each other. B. the binding of the myosin head to actin. C. the cocking of the myosin head by hydrolysis of ATP. D. the cycle of events involved in muscle contraction. E. All of the answer options are correct.
A drug designed to stop neurons from recharging would block the step in which ions
A. are actively pumped against their concentration gradient. B. spontaneously move down their concentration gradient. C. spontaneously move against their concentration gradient. D. are actively pumped down their concentration gradient. E. are in the resting potential state.
What portion of the cell contains microtubules and microfilaments?
a. nucleus b. mitochondria c. cytoskeleton d. smooth ER e. rough ER
One of the first sequenced genomes was for the bacterium Haemophilus influenzae. Once the genes were annotated, a(n) ________ was constructed to represent the entire genome visually.
A. physical genome map B. ORF map C. metagenomic map D. color-code map