Part A: Explain how Enzyme A acts as a catalyst in the reaction. Be sure to include energy and time in your answer. (2 points) Part B: Conditions around an enzyme change and affect the shape of the enzyme's active sites, Predict how an increase in temperature might affect the enzyme's ability to catalyze the
reaction. (2 points)

Which statement about variation is true? a) all phenotypic variation is the result of genotypic variation. b) all genetic variation produces phenotypic variation. c) all nucleotide variability results in neutral variation. d) all new alleles are the result of nucleotide variability. e) all geographic variation results from the existence of clines.