Mcat Studying Set Study Guide Rated A+

Structural isomers can have drastically different roles in the body. Furthermore, only one of multiple optical isomers may be made by the body or be useful as a therapeutic agent. How many structural isomers of C3H6Br2are capable of exhibiting optical activity? A.0 B.1 C.2 D.3 {Ans: B}Which statement about cyclic AMP (cAMP) is NOT true? A. cAMP is formed from ATP. B. The enzyme that catalyzes the formation of cAMP is adenylate cyclase. C. The enzyme that catalyzes cAMP formation is generally located in the cytoplasm. D. cAMP is regarded as a second messenger, since it can trigger a cascade of intracellular reactions after a hormone binds to the cell membrane. {Ans: C}How many different types of gametes would be produced by an organism of genotype AabbCcDdEE, if all of the genes assort independently? A.6 B.8 C.10 D.16 {Ans: B}Which of the following addition reactions occurs the fastest? A. I, because a primary cation is formed in the rate-determining step B. II, because the cation formed in the rate-determining step is stabilized through an inductive effect C. III, because a secondary cation which is resonance-stabilized is formed in the rate-determining step D. II, because a secondary cation