Which of the following ions does not contribute to information flow in a nervous system?

A. chloride
B. calcium
C. hydrogen
D. potassium


C

Biology & Microbiology

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Diseases that are good candidates for eradication have

A) only a human reservoir. B) no asymptomatic phase. C) an environmental reservoir. D) only a human reservoir and no asymptomatic phase.

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Currently, there are bald eagles living in _____ states

a. 28 b. 48 c. 49 d. 50

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Viruses that kill their host cells during each cycle of infection are called

a. virulent bacteriophages. b. bacteriophages. c. temperate bacteriophages. d. phages. e. avirulent bacteriophages.

Biology & Microbiology

A substance is most likely to diffuse into a cell when

(1) it is a large organic food molecule such as protein or starch (2) it is enclosed in an organelle such as a vacuole (3) the concentration of the substance is greater outside the cell than inside (4) the pH of the substance is greater than the pH of the cell

Biology & Microbiology