How do scientists determine the annealing temperature used in PCR reactions?
a. It is always 55?C because the DNA polymerase works best at this temperature.
b. It is always 55?C because primers anneal best at lower temperatures.
c. It is always 60?C because any other temperature would destabilize the DNA.
d. It can vary from 55-60?C depending on the primers being used.
e. It can vary from 55-60?C depending on the type of DNA polymerase being used.
ANSWER: d
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Assemblages of abiotically produced polymers are called:a
stomatolites. b. protobionts. c. polyribosomes. d. endosymbionts. e. ribozymes.
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