An organism that grows slowly in the cold but has an optimum growth temperature of 32°C is called a(n) ________.
A. thermophile
B. facultative psychrophile
C. thermoduric microbe
D. extremophile
E. psychrophile
Answer: B
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Most nutrient absorption takes place in the (select all correct choices):
A. duodenum. B. jejunum. C. ileum. D. colon. E. appendix.
Which of the following is not true of translesion synthesis (TLS)?
A. TLS uses polymerases with wider-than-normal active site architecture to accommodate abnormal nucleotides in the template. B. TLS lacks the 3'-5' exonuclease activity usually required for proofreading. C. It is activated during replication when the polymerase stalls at a lesion; the TLS polymerase takes over long enough to extend the DNA over the lesion. D. TLS can be used to repair lesions such as pyrimidine dimers, bulky adducts, and double-stranded breaks. E. All of these choices are true.
The urinary bladder is labeled
a. 1. b. 2. c. 3. d. 4. e. 5.
You have given a dosage of an antibiotic to a patient for his infection, but the patient is not getting any better. The MIC tests shows that the drug that you prescribed, at the dosage that was given, should work against this particular strain of bacterium. What do you think might be the problem?
A. The drug might be broken down in the patient's body before it can have its full effect on the bacterium. B. The bacterium is immune to the chemical effects of the drug. C. The drug was improperly made at the pharmaceutical company, so is no longer effective. D. The patient is resistant to the drug.