A unit of DNA that directs the building of a protein is the ____
a. genotype
b. phenotype
c. locus
d. gene
e. chromosome
ANSWER: d
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Which refers to an organic, nonpolypeptide compound that binds to the apoenzyme and serves as a
cofactor? a. coenzyme b. catalyst c. substrate d. mineral e. allosteric regulator
During the bacterial cell division, the single cells is separated into two cells by
a. centrosomes. b. spindle fibers. c. nucleosomes. d. pinching of the plasma membrane. e. aneuploidy.
Nonpolar molecules are water soluble.
Answer the following statement true (T) or false (F)
Comparing the evolution of domesticated dogs to the evolution of wolves over the same time period illustrates what relationship between artificial and natural selection?
A. In artificial selection, the magnitude of the selection pressure can be varied; in natural selection, it cannot. B. Artificial selection is more likely to produce maladaptive structures than natural selection. C. Artificial selection is slower than natural selection. D. Artificial selection cannot produce changes as large as changes produced by natural selection. E. Artificial selection is reversible; natural selection is not.