Parasympathetic nervous activity has what effect on systemic arterioles?
A) vasospasm
B) vasoconstriction
C) vasodilation
D) neither vasodilation or vasoconstriction, but may cause vasospasm
E) neither vasoconstriction and vasodilation
Answer: E) neither vasoconstriction and vasodilation
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Shigella
A. are themselves nonmotile. B. may be pushed from cell to cell by actin tails. C. utilize pili to move. D. utilize flagella to move. E. are themselves nonmotile AND may be pushed from cell to cell by actin tails.
If you add together all the numbers of endangered or threatened animal species, it would be
__________ the number of endangered or threatened plants.
a. less than b. equal to c. more than d. This data has not been collected.
A minimal medium for E. coli contains
1.water. 2.an organic carbon source such as glucose. 3.inorganic salts. 4.an inorganic salt providing nitrogen. 5.All of the options are correct.
Which of the following statements is NOT true about the germinated pollen grain?
A. Fertilization occurs when the pollen grain germinates. B. The generative cell produces two sperm. C. There are two sperm nuclei that move down the pollen tube to the micropyle. D. The pollen tube forms in the style. E. The tube cell produces the pollen tube.