Which of the following lists contain
ingredients that are essential for PCR?
a. nucleotides, DNA template, Taq
polymerase, and primers
b. nucleotides, DNA template, DNA ligase,
and primers
c. restriction enzymes, DNA template, Taq
polymerase, and primers
d. nucleotides, DNA template, Taq
polymerase, and plasmids
e. nucleotides, DNA template, DNA ligase,
and plasmids
A
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When plowing or grazing removes plants and exposes topsoil to wind erosion, the result is often:
a. desertification b. acid rain c. deforestation d. bioaccumulation e. biological magnification
The number of offspring an individual organism could have under optimal conditions is called the
a. biotic potential. b. fertility rate. c. life expectancy. d. carrying capacity. e. fecundity.
As men age, the prostate may enlarge but not become cancerous. This enlarged prostate may result in ________
A) sterility B) difficulty with urination C) impotence D) constipation
The oxygen produced by a plant comes most directly from
A. CO2. B. H2O. C. C6H12O6. D. glyceraldehyde-3-phosphate.