In photosynthesis, carbon fixation occurs:
A. during photorespiration
B. in photosystem II
C. in the Calvin cycle
D. in photosystem I
E. in the electron transport chain
Answer: C
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Based on the ABC model, what would be the structure of a flower from the outermost whorl that had normal expression of genes A and C and expression of gene B in all four whorls?
A) carpelâ€"petalâ€"petalâ€"carpel B) petalâ€"petalâ€"stamenâ€"stamen C) sepalâ€"carpelâ€"carpelâ€"sepal D) sepalâ€"sepalâ€"carpelâ€"carpel E) carpelâ€"carpelâ€"carpelâ€"carpel
The above figure is a photograph of
a. a plant with root nodules. b. mycorrhizae. c. root hairs. d. a demonstration of the effect of mutualistic Rhizobium. e. a microscopic view of a nodule forming around area where the bacterium infect.
Large ears is a rare trait in a mainland population of mice. A few female mice homozygous for very large ears arrive at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ________
A. a bottleneck effect. B. natural selection. C. genetic drift. D. increased mutation. E. gene flow.
Your biceps muscle is derived from the
A) ectoderm. B) amnion. C) mesoderm. D) blastopore. E) endoderm.