Which of the following statements concerning cancer and mutations is correct?
A. Cancer can only occur with a mutation in a
somatic cell.
B. Cancer can only occur with a mutation in a
germ cell.
C. Usually multiple mutations are required in
different genes to cause cancer.
D. Usually a single mutation is all that is
required to cause cancer.
E. None of the answer options is correct.
C
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The idea that the adenine and thymine bases of the DNA interact in some manner was first proposed by _______
A. Watson and Crick B. Franklin C. Pauling D. Chargaff
A gradual rise in numbers during an epidemic indicates a common source epidemic
Indicate whether this statement is true or false.
The best method for culturing Chlamydia is
A. a minimal, defined selective medium. B. to incubate the medium at slighty lower than body temperature. C. enrichment through several rounds of blood culture. D. eukaryotic cell culture.
A new antibiotic has been developed. It acts as a noncompetitive inhibitor. How will this antibiotic affect delta G for the enzyme-catalyzed reaction?
A. Delta G will increase. B. Delta G will be unaffected. C. Delta G will decrease.