The figure above represents
a. individual genes from an asexual worm.
b. maternal chromosomes that are identical.
c. paternal chromosomes that are identical.
d. homologous chromosomes.
e. nonhomologous chromosomes.
ANSWER: d
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Due to the number of phosphate groups, ATP has approximately three times more energy stored than AMP, and ADP has approximately two-thirds the energy stored of ATP
Indicate whether the statement is true or false.
In vertebrates, which of the following is not a function of calcium?
A. blood clotting B. muscle contraction C. transport of oxygen to the body's cells D. cell membrane permeability E. strengthening of bone
______ is an example of a plant that is genetically modified to produce high quantities of betacarotene
for conversion to vitamin A. a. Tobacco c. Rice e. Watermelon b. Corn d. Apple
Erection occurs when
A. nitric oxide is released. B. the spongy erectile tissue of the penis becomes engorged with blood. C. the arteries of the penis vasodilate. D. the veins flowing out of the penis vasoconstrict. E. All of these events occur to promote an erection.