Most of the water moving through a plant is lost through ____
a. osmotic gradients in the soil
b. transpiration
c. translocation
d. photolysis
e. photosynthesis
ANSWER: b
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Answer the question using the accompanying figure. The structure labeled “B” forms at the ____
a. junctions of A bands and I bands b. H zone c. junctions of A bands and H zones d. M line e. junctions of I bands and M lines
Why do most replication errors occur?
a. DNA polymerases work very fast and mistakes are inevitable. b. DNA repair mechanisms do not work well. c. DNA replication is a slow and uncommon process. d. The hydrogen bonds between base pairs are weak. e. DNA ligase often binds incorrect sections of DNA.
Skin color and eye color are examples of
a. traits related to pleiotropic genes. b. single gene traits. c. polygenic traits. d. bigenic traits. e. mutually exclusive traits
Neurons rely on glial cells for
a. protection. b. metabolic support. c. insulation. d. All of the above