Scientists usually name enzymes by adding what suffix to the name of the substrate with which the enzyme is
associated?
a. -ase
b. -tic
c. -yst
d. -lose
e. -ator
a
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In the Ames test for mutagenicity,
A) reverse mutations convert auxotrophs to prototrophs that survive. B) colonies are due to forward mutations that convert prototrophs to auxotrophs. C) cells are treated with mutagen and only cells with no mutations survive. D) cells are treated with excess amino acids and cells with mutations are killed. E) rat liver enzymes are present to protect cells from mutation.
An allele is
a. the dominant form of a gene. b. an alternate form of a gene. c. always recessive. d. the main factor determining a trait. e. always one of a pair.
Four of the five answers listed below release secretions that assist digestion. Select the exception
a. salivary gland b. esophagus c. pancreas d. gall bladder e. liver
Which of the following would be most appropriate for disposal of cultures on agar plates?
normal trash receptacle sharps container biohazard bag or bin