Which era saw the rise of seeds and pollen in plants?
A) Precambrian B) Cenozoic C) Paleozoic D) Cretaceous E) Mesozoic
C
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Which objective would be best to use a Southern blot rather than a Northern blot?
A) Determine if a gene is present in a genome. B) Discover gene function. C) Identify regulatory gene-protein interactions. D) Quantify expression profiles of a gene.
The oxygen production measured in the experiments of this exercise
a. is a consequence of the breakdown of hydrogen peroxide. b. is an index of enzyme activity. c. may depend on pH, temperature, or enzyme concentration. d. is all of the above.
A heritability value of 0.6 for IQ indicates that 60 percent of a person's IQ results from genetic
influence. Indicate whether the statement is true or false.
Which of the following best describes aquaporins?
a. They are channel proteins for water. b. They are carrier proteins for water. c. They are channel proteins for solutes. d. They are carrier proteins for water and solutes.