Refer to Figure 46-1. Put figures 1-4 in the correct order to represent the two-cycle breathing process of birds
a. 1 ? 2 ? 3 ? 4
b. 2 ? 3 ? 4 ? 1
c. 2 ? 3 ? 1 ? 4
d. 3 ? 2 ? 1 ? 4
e. 4 ? 3 ? 2 ? 1
C
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Which of the following is (are) used by microorganisms to become resistant to a particular drug?
A. Exclusion of the drug from the cell B. Enzymatic inactivation of the drug C. An alternate metabolic pathway that bypasses the drug-sensitive step D. All of the choices are correct.
What advantage do proteorhodopsin-containing organisms have over other heterotrophic microbes in the open ocean?
What will be an ideal response?
What is the function of the poly A tail?
A. The poly A tail is required for the proper exit of mRNA from the nucleus. B. The poly A tail allows mRNA to bind to the ribosome. C. The poly A tail increases mRNA stability in eukaryotes. D. The poly A tail increases mRNA stability in prokaryotes. E. The poly A tail serves as a termination sequence for RNA polymerase III.
If the two parents are each heterozygous for widow's peak and having freckles, what is the chance that any of their children will have the same phenotype?
A) 1/16 B) 1/2 C) 3/16 D) 9/16