If a bacterium with the ability to survive the effects of an antibiotic "pops up" in a population, it most likely
A. resulted from spontaneous mutation.
B. increased in number before the antibiotic began to be used.
C. was introduced from another species.
D. was created by the antibiotic.
A. resulted from spontaneous mutation.
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Which one of the following statements about Chlamydia and Chlamydophila spp. is false?
A) They are obligate intracellular pathogens. B) They are considered to be “energy parasites.” C) The diseases they cause are all arthropodborne. D) They are considered to be Gram-negative bacteria.
The female gametophyte of a flower develops within a(n) ____
a. stigma b. anther c. calyx d. corolla e. ovule
What does the Pectoralis major do?
What will be an ideal response?
Viral DNA is replicated by:
a. viral DNA. b. conjugation. c. bacterialDNA. d. using the host's metabolic machinery and energy.