When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to
A. more possible products of the reaction
B. more permanent binding through intimate total contact
C. a greater supply of activation energy
D. a great range of possible catalytic activities
E. an induced fit
Answer: E
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The pink-red rash of scarlet fever may be caused by streptococcal pyrogenic exotoxins A, B, C, and E, which are coded for on a lysogenic bacteriophage
Indicate whether the statement is true or false.
Which of the following DOES NOT identify a particular advantage in using Arabidopsis to study plant
development and genetics? a. The Arabidopsis genome has been sequenced. b. Arabidopsis mutants can be easily induced with chemicals. c. Many developmental mutants have been identified in Arabidopsis. d. This plant completes its life cycle in just a few weeks. e. It is a weed of no economic importance
In most vertebrates, the sperm cell normally contributes which of the following to the new organism?
A. Many mitochondria B. Significant amounts of RNA C. A haploid complement of chromosomes D. Most of the cytoplasm of the zygote E. Two sex chromosomes
While collecting a diverse group of finches, Darwin noticed great variability in the shapes of their bills. However, he incorrectly assumed which of the following.
a. that birds on the same island belonged to the same species b. that birds on the same island did not belong to the same species c. that birds on different islands did not belong to the same species d. that birds on different islands belonged to the same species