What is the advantage of constructing an ecological pyramid based on biomass?
A. Size of the various organisms is eliminated as a factor.
B. Aquatic ecosystem pyramids actually look like pyramids.
C. This takes into account nutrient cycling as well as energy flow.
D. This includes the detrital food web as well as the grazing food web in one pyramid.
E. This eliminates the need to include producers in the pyramid.
Answer: A
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Which one of the following statements about pH is incorrect?
A. An acidic solution has a higher concentration of protons than hydroxide ions. B. Physiological pH is defined as the pH of pure water, 7.0. C. Some cellular compartments have different pH values than others. D. The pH of a solution can range from 0 to 14. E. A solution of pH 5 has a proton concentration 100 times greater than a solution of pH 7.
Interstitial cystitis is a painful condition characterized by bladder pain and chronic inflammation of the bladder wall. Interstitial cystitis is a disease of the:
A. reproductive system. B. excretory system. C. nervous system. D. digestive system. E. endocrine system.
Thorough mixing of oxygen and nutrients
within lakes in temperate regions occurs in a. winter and summer. b. winter and spring. c. spring and summer. d. spring and autumn. e. summer and autumn
Assume that there are 12 map units between two loci in the mouse and that you are able to microscopically observe meiotic chromosomes in this organism. If you examined 200 primary oocytes, in how many would you expect to see a chiasma between the two
loci mentioned above? A) 12 B) 6 C) 48 D) 96 E) 24