When the haploid hyphae of two club fungi of
opposite mating type fuse, what is the nuclear
condition (known as ploidy)?
a. 1n
b. 2n
c. 3n
d. n+n
e. 2n+n
D
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A solution with a pH of 8 has how many times
fewer hydrogen ions than a solution with a pH of 6?
a. 2 b. 5 c. 10 d. 100 e. 1,000
Which statement about chlorofluorocarbons is FALSE?
a. They can destroy ozone. b. They are odorless. c. They are a greenhouse gas. d. They break down very slowly. e. Their action is allowing more UV radiation through the atmosphere.
The goal of pharmacogenetics is to identify genes related to human diseases. Indicate whether the statement is true or false
The reason that the steroid hormone aldosterone affects only a small number of cells in the body is that _____
A) only its target cells get exposed to aldosterone B) only its target cells contain aldosterone receptors C) it is unable to enter nontarget cells D) nontarget cells destroy aldosterone before it can produce any effect