Mannitol salt agar is selective for Staphylococcus aureus because this organism
A. is often resistant to methicillin.
B. can withstand high salt concentration.
C. is unique in its ability to ferment mannitol.
D. can tolerate brief exposures to high temperature.
E. can synthesize catalase.
Answer: B
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Which of the following disease symptoms would you expect to see in legumes grown in sterile soil?
a. purplish veins b. chlorosis and mottled or bronzed leaves c. chlorosis in older leaves and stunted growth d. burned leaf edges and curled, mottled, or spotted older leaves e. pale green, rolled, or cupped leaves
The biological demand for this overshoots the sustainability of Earth by 40%
a. seafood b. timber and paper c. buildings d. energy e. food and fiber
The amino acid sequences of human and bonobo hemoglobin are almost identical, yet they differ considerably from the sequence of the hemoglobin of wolves. This fact indicates that
A) bonobos are more closely related to humans than to wolves. B) wolves and bonobos are closely related. C) humans are more closely related to wolves than to bonobos.
Many farms in New England were abandoned in the 1800s as settlers reached the more fertile grasslands of the Midwest. These farms had been planted in different crops, but within five to ten years the farms appeared to have similar herbaceous and small
tree species on them. This is an example of: A) secondary succession. B) coevolution. C) primary succession. D) convergent evolution.