Microbes that enter the digestive system may be
killed by
a. lysozyme.
b. hydrochloric acid.
c. protein-digesting enzymes.
d. bile salts.
e. any of these.
Answer: e
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The active site of DNA polymerase is similar in ____
a. archaea and bacteria only b. archaea, bacteria, and eukaryotes c. archaea and eukaryotes only d. none of these groups e. bacteria and eukaryotes only
Even though coastal areas comprise only 10% of the oceans' area, they make up ____% of the total oceans' fisheries
a. 10 b. 20 c. 60 d. 90 e. 50
Insulin is a peptide hormone that controls the level of glucose in the blood. It is released from the pancreas as soon as you eat, even before blood glucose levels rise. This is an example of:
A. conditioning. B. positive feedback. C. negative feedback. D. feed-forward regulation.
If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATE THE BAG RAT?
A. insertion B. deletion C. silent D. missense E. nonsense