What must happen to amino acids before they can be used in catabolic reactions?
A. They must be dehydrogenated
B. They must be deoxygenated
C. They must be decarboxylated
D. They must be deaminated
Answer: D
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Do you agree with the strategy of xenotransplantation to alleviate the shortage of donated human organs? Why or why not?
What will be an ideal response?
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.
If a cross of two traits shows a 9:3:3:1 ratio, you know the organism was what?
A. Both heterozygous B. Both homozygous C. One of each
If the frequency of PKU (an autosomal recessive disease) is 1%, what percentage of the population are completely unaffected (homozygous dominant or carrier)?
What will be an ideal response?