A microbiologist suspects a strain of Staphylococcus aureus is resistant to methicillin. What would be the best approach to test this suspicion?
A. Perform a Gram stain.
B. Add methicillin to the growth plates.
C. Inject the bacteria into a host animal and look for disease symptoms.
D. Calculate the doubling time for the bacteria.
E. Sequence the chromosome looking for resistance genes.
Answer: B
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Plant hormones produce their effects by _____
I) altering the expression of genes II) modifying the permeability of the plasma membrane III) modifying the structure of the nuclear envelope membrane A) only I B) only II C) only III D) only I and II E) I, II, and III
The phenetic system is based primarily on:
a. known evolutionary relationships. b. fossil evidence. c. the number of shared characteristics. d. the number of ancestral characteristics. e. both ancestral and shared characteristics.
An individual has _____ allele(s) for each trait
Fill in the blank(s) with the appropriate word(s).
The G-value paradox states that:
a. genome size does not correlate with organismal complexity. b. the number of protein coding sequences do not correlate with organismal complexity. c. genome size does not correlate with the number of protein coding sequences. d. B and C. e. All of the above.