The most abundant protein in the world is the enzyme that initiates the fixation of carbon in the Calvin cycle. This enzyme is called
a) rubisco
b) glyceraldehyde 3-phosphate
c) ATP-synthase
d) ribulose biphosphate
e) crassulacean acid
Answer: a) rubisco
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Erection occurs when
A. the spongy erectile tissue of the penis becomes engorged with blood. B. the veins flowing out of the penis vasoconstrict. C. the arteries of the penis vasodilate. D. nitric oxide is released. E. All of these events occur to promote an erection.
Genes that turn off or decrease the rate of cell division are known as ____________________ genes
Fill in the blank(s) with correct word
Transformation was discovered by:
a. Francois Jacob. b. Elie L. Wollman. c. Gregor Mendel. d. Joshua Lederberg. e. Fred Griffith.
A __________ is an area where all precipitation drains into a specific waterway. Fill in the blank(s) with the appropriate word(s)