Which of the following characterize biofilms that form within the body?
A. Biofilms protect microorganisms from antibiotics.
B. Biofilms help microorganism adhere to human tissue.
C. Biofilms are usually made up of only one species of bacteria.
D. Biofilms are formed only by Gram-positive bacteria.
E. Biofilms protect microbes from the body's defenses.
Answer: E
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You measure the amount of enzyme activity in the presence of compound X and note that as you add more substrate the amount of enzyme activity increases. This indicates that the compound X is an __________.
A. non-competitive inhibitor B. competitive inhibitor C. activator D. allosteric inhibitor E. enzyme
The logical conclusion that can be drawn from Wilcove's experimental data in the graph above is that
____.
a. songbird nests in a variety of habitats are equally likely to be found by predators b. songbird nests in forest fragments are more likely to be found by predators than those in intact tracts of forest c. songbird nests in forest fragments are less likely to be found by predators than those in intact tracts of forest d. songbird nests in rural areas are more likely to be found by predators than those in suburban areas e. songbirds that nest on the ground are more vulnerable to predators than those that nest in trees or shrubs
Which type of chromosome has no p arms?
A) metacentric B) submetacentric C) acrocentric D) subacrocentric E) telocentric
The events of binary fission are I. the cell doubles in size II. the DNA is replicated III. the cell forms a septum IV. the cell separates from its offspring The CORRECT order of these events is
A) I, III, II, IV. B) II, III, I, IV. C) IV, I, III, II. D) II, I, III, IV. E) I, II, IV, III.