What does a typical recessive allele code for?
A) a lethal protein
B) a nonfunctional protein
C) a functional protein
D) a mutant protein
B
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Inducing mutations in a population...
a) is a method of cloning b) increases the genetic variation in the population c) results in organisms with very similar traits d) decreases the genetic variation in the population
According to the fossil record, which of the following jawed fishes diversified in the Devonian and Carboniferous periods, but left no direct descendants?
a. placoderms b. ostracoderms c. osteolepiforms d. conodonts
Which type of macromolecule is present in enzymes?
What will be an ideal response?
One way in which an enzyme can lower the activation energy required for a reaction is to bind the substrate(s) and distort its structure so that the substrate more closely resembles the transition state of the reaction
This mechanism will be facilitated if the shape and chemical properties of the enzyme's active site are more complementary to the transition state than to the undistorted substrate; in other words, if the enzyme were to have a higher affinity for the transition state than for the substrate. Knowing this, your friend looked in an organic chemistry textbook to identify a stable chemical that closely resembles the transition state of a reaction that converts X into Y. She generated an antibody against this transition-state analog and mixed the antibody with chemical X. What do you think might happen?