The Ames test is used to identify potential carcinogens on the basis of their ability to
A) relocate genes from one section of the genome to another.
B) cause back-mutations in bacteria.
C) cause replication.
D) induce excision repairs
Ans: B) cause back-mutations in bacteria.
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A person with narcolepsy may experience
A) cataplexy, in which he or she suddenly collapses. B) dogaplexy, in which he or she suddenly collapses. C) inability to sleep. D) excessive REM sleep.
The _____ is the opening at the end of the glans of the penis through which urine and semen pass.
A. testis B. fourchette C. meatus D. perineum
The enzyme below that has been identified as a negative regulator of glycogen synthase is ______.
a) glycogen synthase kinase-3 b) glycogen phosphorylase c) protein kinase A d) glycogen phosphorylase kinase e) insulin synthase kinase
If hybrid organisms result from the mating of two different species, they may not live long. This is an example of:
A) hybrid vigor. B) hybrid infertility. C) temporal isolation. D) hybrid inviability.