What kind of symbiosis occurs between bioluminescent bacteria and its host?
a. Commensalism
b. Mutualistic
c. None of these choices
d. Parasitism
b
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RNA-dependent RNA polymerases are needed by which group of viruses?
A. Double stranded RNA viruses B. Minus strand RNA Viruses C. Plus strand RNA viruses D. All of these types of RNA viruses require RNA Dependent RNA polymerase.
Which of the following is (are) true about cephalosporins?
A. They can be given to patients with penicillin allergies. B. They, like penicillin, inhibit bacterial cell wall synthesis. C. There are four generations of cephalosporins. D. All of the choices are correct.
The complementary base pairs in a DNA molecule are stabilized by:
A) ionic bonds. B) a salt bridge. C) hydrogen bonds. D) covalent bonds. E) the electrostatic interactions of the charged backbone
Which is not true about the circadian theory?
What will be an ideal response?