When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to
A. an induced fit
B. a great range of possible catalytic activities
C. a greater supply of activation energy
D. more permanent binding through intimate total contact
E. more possible products of the reaction
A. an induced fit
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Which of the following extraembryonic membranes
is the first site of blood cell formation and the source of germ cells? a. amnion b. yolk sac c. chorion d. allantois e. none of these
Many lines of evidence suggest that human populations aren't distinct races. Why are we so similar even though adaptations to local conditions have occurred?
A) Members of different populations mate with each other. B) Natural selection has acted in the same way for all groups of humans. C) Populations mate assortatively. D) Sexual selection has acted in the same way for all groups.
An endergonic reaction can proceed only if it absorbs:a
randomly available free energy. b. less free energy than is released by a coupled exergonic reaction. c. more free energy than is released by a coupled exergonic reaction. d. less free energy than is released by a coupled endergonic reaction. e. the same amount of free energy that is absorbed by the enzymatic breakdown of proteins.
Using the information below calculate the total magnification
Objective magnification: 100 Ocular magnification: 5 (Hint: Objective x Ocular = Total)