Which of the following is false about the structure of enzymes? A
Every enzyme has an active site.
B
An enzyme can catalyze most reactions if the reactants are at a high concentration.
C
An enzyme’s active site is determined by the shape of the enzyme.
D
Enzymes speed up reaction rates.

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.