If a plant's stomata were always closed, how would this affect the plant's ability to make glucose?
A. Plants would be able to make more sugar than normal.
B. Plants would make less sugar than normal.
C. There would be no effect on the ability of the plant to make glucose.
Answer: B
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A female cat in heat urinates more often and in many places. Male cats are attracted to the urine deposits. Which of the following is a proximate cause of this increased urination?
A) It announces to the males that she is in heat. B) Female cats that did this in the past attracted more males. C) It is a result of hormonal changes associated with her reproductive cycle. D) The female cat learned the behavior from observing other cats.
Which statement best describes the gametes of most animals?
a. A sperm is large and motile; an egg is small and nonmotile. b. A sperm is small and nonmotile; an egg is large and motile. c. A sperm is large and nonmotile; an egg is small and motile. d. A sperm is small and motile; an egg is large and nonmotile. e. The sperm and egg are about the same size, but only the sperm is motile.
Which is a complete list of the ingredients that are essential for PCR?
a. nucleotides, DNA template, Taq polymerase, and primers b. nucleotides, DNA template, DNA ligase, and primers c. restriction enzymes, DNA template, Taq polymerase, and primers d. nucleotides, DNA template, Taq polymerase, and plasmids e. nucleotides, DNA template, DNA ligase, and plasmids
The atomic mass of the atom identified as A in Figure 2-1 is:
a. 2.
b. 6.
c. 8.
d. 12.
e. 18.