Arrange the following electron acceptors in the proper order in which they participate in electron transport. 1 = Cytochrome c 2 = Oxygen 3 = Cytochrome c oxidase
a. 1, 2, 3
b. 1, 3, 2
c. 2, 3, 1
d. 3, 1, 2
e. 3, 2, 1
Answer: b. 1, 3, 2
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The main antibody present during the primary immune response is____
a. IgE b. IgA c. IgD d. IgG e. IgM
Wild type blue-eyed Mary has blue flowers. Two genes control the pathway that makes the blue pigment: The product of gene W turns a white precursor into magenta pigment. The product of gene M turns the magenta pigment into blue pigment. Each gene has a recessive loss-of-function allele: w and m, respectively. A dihybrid (WwMm) is self-pollinated. What proportion of the offspring will be magenta?
a. 1/16 b. 3/16 c. 1/4 d. 9/16
Figure 40.12A
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Use the figure above showing a marine bony fish to answer the following question.
Blanks "A" and "B" should be labeled, respectively, ____.
A. does not gulp; loss B. does not gulp; gain C. gulps; loss D. gulps; gain E. does not gulp; pump
Males tend to be affected in greater numbers by X-linked recessive genetic disorders than are females because
A. expression of the recessive gene is inactivated by the other X chromosome in females. B. males have only one X chromosome. C. males have a double dose of the gene. D. Y chromosomes are destabilized by the X chromosomes. E. females have only one X chromosome.