Energized myosin heads bind to actin only when ____ is present
a. myosin
b. AMP
c. calcium
d. ATP
e. sodium
ANSWER: c
Biology & Microbiology
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During photosynthesis, _____________ is reduced to _____________
A. water; carbon dioxide B. carbon dioxide; glucose C. oxygen; water D. glucose; oxygen E. carbon dioxide; oxygen
Biology & Microbiology
Once urine has formed in the kidney it flows into the
a. urethra. b. bladder. c. pelvic cavity. d. rectum. e. ureter.
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Mitotic CDK kinases are activated by an increase in mitotic cyclins.
a. true b. false
Biology & Microbiology
A Tyrannosaurus rex's closest relative is a
A. squirrel. B. chicken. C. bullfrog. D. Komodo dragon.
Biology & Microbiology