Relaxation of skeletal muscle following contraction requires:
A. Ca++ release by the ryanodine receptor
B. Ca++ uptake by SERCA
C. Ca++ efflux by the plasmalemmal Ca++ pump
D. dephosphorylation of a myosin light chain
E. activation of Rho kinase
ANS: B
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Fill in the blank(s) with the appropriate word(s).
An average human ejaculate contains about ____ sperm
a. 20-30 million b. 100-120 million c. 100-120 thousand d. 150-200 million e. 300-400 million
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Fill in the blank(s) with correct word
Explain how the complementary strands of DNA are held together
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