A cell with a diploid number of 20 will have how many chromosomes at the end of meiosis?
A) 40
B) 10
C) 20
D) 5
Answer: B) 10
You might also like to view...
Photosynthesis ceases when leaves wilt, mainly because _____
A) the chlorophyll in wilting leaves is degraded B) flaccid mesophyll cells are incapable of photosynthesis C) stomata close, preventing carbon dioxide from entering the leaf D) photolysis, the water-splitting step of photosynthesis, cannot occur when there is a water deficiency E) accumulation of carbon dioxide in the leaf inhibits enzymes
In Engelmann's 1882 experiment, why did bacteria cluster in red or blue wavelengths of light?
a. The bacteria used those wavelengths to photosynthesize. b. Algae photosynthesized best at those wavelengths, producing needed oxygen. c. The bacteria produced oxygen most efficiently using red and blue light. d. Algae photosynthesized best at those wavelengths, producing needed carbon dioxide. e. The bacteria were attracted to bright light.
Which of the following would be more likely to
affect an animal’s habitat than its niche? a. rainfall b. prey abundance c. predators d. defense mechanisms e. competitors
Bogs formed when a lake basin fills in from above rather than from below, creating a floating mat of peat over open water, are called
A) fens. B) blanket mires. C) moors. D) quaking bogs.