The biological macromolecule that is least soluble in water is a(n):
A. lipid.
B. nucleic acid.
C. protein.
D. carbohydrate.
E. enzyme
A. lipid.
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Mammalian steroid hormones are signaling molecules that function in which of the following types of cell signaling?
A. juxtacrine B. paracrine C. autocrine D. endocrine E. All of these choices are correct.
If an environment changes rapidly, individual organisms with will likely survive and reproduce.
A. the correct allele frequency B. existing neutral mutations C. existing beneficial mutations D. the ability to produce beneficial mutations E. the ability to adapt their genotype
Which of the following is not a function of a plant stem?
A. storage of starch B. storage of water C. production of pollen D. support E. protection from predators
If one pair of alleles exhibits simple dominance
while the other pair exhibits incomplete dominance, the F2 phenotype produced from a cross of AA BB with aa bb will produce a __________ ratio. a. 1:1:1:1 b. 9:3:3:1 c. 1:4:6:4:1 d. 1:2:1 e. 3:6:3:1:2:1