The lock-and-key mechanism refers to:
a. the complementary shapes of an enzyme and a substrate.
b. the attractive forces between an enzyme and a substrate.
c. the ability of an enzyme to lower the activation energy of a reaction.
d. the ability of an enzyme to “unlock” the products of a reaction.

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.