Which of the following is not associated with a bacterial ribosome?
A. Its small subunit provides the enzymes for making peptide bonds.
B. It is a 70s holoenzyme.
C. It has a peptide (P) site.
D. It has an exit site.
E. It has an amino acid (A) site.
Answer: A
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How does the phosphorylation of galactose differ from the phosphorylation of glucose, mannose, and fructose prior to catabolism?
A. Phosphorylation of galactose requires NADPH to phosphorylate galactose-1-phosphate B. Phosphorylation of galactose requires ATP to phosphorylate galactose-1-phosphate C. Phosphorylation of galactose requires PEP (phosphoenolpyruvate) to phosphorylate galactose-1-phosphate D. Phosphorylation of galactose requires UTP to phosphorylate galactose-1-phosphate E. Phosphorylation of galactose requires TTP to phosphorylate galactose-1-phosphate
How many mRNA nucleotides code for one amino acid?
a. One b. Two c. Three d. Six
Of the organisms listed below, which has the largest genome size?
A) human B) onion C) fruit fly D) amoeba E) salamander
Sue brought her daughter Amy to the pediatrician complaining of a sore throat. The physician examines Amy and observes that her throat is bright red and there are white pus-filled nodules on her tonsils. Which of the following conclusions should be made?
A. She has a strep throat and should begin antibiotics. B. She should have a rapid strep test performed before a diagnosis is made. C. She should go home and rest because most sore throats are viral in origin. D. She should go home and come back in two days for a strep test since it may take that long to show up. E. She has a staphylococcal sore throat and should begin antibiotics immediately.