Which of the following is not one of the periods of the Paleozoic era?
1.Cambrian
2.Carboniferous
3.Jurassic
4.Permian
3
Biology & Microbiology
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A repressor is a molecule that represses biosynthesis of an mRNA transcript
Indicate whether the statement is true or false.
Biology & Microbiology
Which of the following pathways would be used for photosynthesis by a cactus found in the desert?
A. C4 pathway B. C3 pathway C. CAM pathway D. Krebs cycle E. All of the answer choices are correct.
Biology & Microbiology
A typical fat molecule has ____ fatty acid tails
a. one b. two c. three d. four e. five
Biology & Microbiology
Using the illustration above and the
assumption that half of a plant's sperm and eggs are a and half are A, one can predict that the chance of sperm a meeting egg A at fertilization is a. 1/2 ? 1/2. b. 25 percent. c. one out of four. d. 1/2. e. all of these EXCEPT 1/2.
Biology & Microbiology