Which of the following is a by-product of the catabolism of proteins?
A) lactic acid
B) acetyl-CoA
C) proteases
D) ammonia
E) carbon dioxide
D
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What characteristic of short tandem repeats (STRs) DNA makes it useful for DNA fingerprinting?
A) The number of repeats varies widely from person to person or animal to animal. B) The sequence of DNA that is repeated varies significantly from individual to individual. C) The sequence variation is acted upon differently by natural selection in different environments. D) Every racial and ethnic group has inherited different short tandem repeats.
Explain the purpose and uses of the chi-square test.
What will be an ideal response?
With the appearance of photosynthetic cyanobacteria and aerobic bacteria during the Precambrian era,
A. the amount of UV light reaching the Earth was reduced and chemical evolution slowed. B. an oxidizing atmosphere developed on Earth. C. the formation of the ozone shield occurred. D. All of the choices are correct.
Which of the following is a substrate of ATM (ataxia telangiectasia mutated) or ATR?
A. Cdc25A B. Cdc25C C. cyclin B D. Chk1 E. Rb