True or False: Protein chaperones are found in all domains of life, and their sequences are highly conserved among all organisms
a. TRUE
b. FALSE
Answer: A
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Persons with heartburn may have problems with their
a. pyloric sphincter. b. bursa of Fabricius. c. cardiac sphincter. d. Peyer's patches. e. choane.
The bran of the seed contains primarily
a. lipopolysaccharides. b. proteins and vitamins. c. fiber and minerals. d. fructose. e. none of these.
The evolution of new species
A. always takes millions of years. B. can take place in one generation. C. is a rare event over hundreds of millions of years. D. is not occurring today.
Which of the following procedures was most likely followed to determine the change in beak size?
a. A few finches were trapped in 1981 and again in 1987 and the beak size in the original finches was determined by estimation b. The beak size in fifteen finches was measured in 1987 and the beak size in the original finches was determined by estimation c. The beak size in a large number of finches was measured every year from 1981 to 1987 d. Finches were captured and bred in 1981 and the beak size of the offspring was measured