During ________ proteins are moved from the cytoplasm to the membrane or periplasmic space, while during ________ proteins are moved from the cytoplasm to the external environment.
A. translocation; translation
B. translocation; secretion
C. secretion; translocation
D. transcription; translation
E. secretion; translation
Answer: B
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The reservoir of infection for botulism and tetanus is
A. humans. B. soil. C. water. D. animals. E. soil AND water.
Which of the following is not true of whooping cough?
A. Secondary infections can occur during the convalescent phase. B. It is caused by a small, aerobic, gram-negative rod. C. Incubation period is 3-21 days. D. An uncontrollable cough occurs during the paroxysmal stage. E. Cold-like symptoms are common for the paroxysmal stage.
Compared to antibiotics, there are fewer antiviral agents available because ________.
A. viruses are not as deadly as bacteria so research dollars have been spent developing antibacterial drugs B. before drugs were developed that could directly target virus-specific enzymes, it was thought that any antiviral agent would have to target host cell processes, ultimately damaging cells and tissues C. they are much more costly to produce due to the small size of viruses compared to bacteria D. antibiotics are produced by other bacteria, whereas all antivirals have to be synthesized in a laboratory
The event that triggers fruit formation is the growth of a pollen tube through the carpel of a flower. Identify a reasonable hypothesis about the basis of this effect
A) Pollen tubes grow in response to a cytokinin produced by the carpel. B) Pollen tubes grow in response to abscisic acid. C) The growing pollen tube produces ethylene. D) The growing pollen tube produces auxins and/or gibberellins.