On October 29, Barbara volunteered for a study group for her microbiology class. On October 30, she felt fine. On November 1, Barbara developed a "scratchy throat" when she swallowed. On November 2, Barbara had a headache, runny nose, and watery eyes. She was fully recovered on November 7. During which time was Barbara in the prodromal period?
A) October 30
B) November 1
C) November 2
D) November 7
Ans: B) November 1
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The metabolic breakdown of specialized brown fat depots in certain animals is substantially increased during _____
A) acclimatization B) torpor C) evaporative cooling D) nonshivering thermogenesis E) shivering thermogenesis
Which of the following is not true of the second step of translational elongation in bacteria?
A. The carboxyl group oxygen of the A-site amino acid is the nucleophile in peptide bond formation. B. A peptide bond is formed between the two amino acids bound by the tRNAs in the A and Psites. C. The growing polypeptide chain is transferred to the tRNA in the A site. D. The ?-amino group of the A-site amino acid attacks the carbonyl carbon of the P-site amino acid.
The plasma membrane Na+/K+-ATPase pump
A. is used to generate sodium and potassium gradients across the membrane. B. is a symporter. C. is a pump for active transport of K+ out of the cell and Na+ into the cell. D. is a pump for facilitated diffusion of K+ into the cell and Na+ out of the cell. E. does not require ATP.
If the proportion of F2 individuals resembling either of the two most extreme parental phenotypes can be determined, which formula can be applied to determine the number of gene pairs involved?
What will be an ideal response?