As few as ____ toxic Escherichia coli cells can cause disease

a. one
b. 10
c. 100
d. 1000
e. 10,000


ANSWER: b

Biology & Microbiology

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Indicate whether the statement is true or false.

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Indicate whether the statement is true or false.

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When potassium ion channels open, which of the following occurs?

a. potassium ions flow into the axon cytoplasm b. the axon cytoplasm becomes more negatively charged c. sodium ions diffuse into the axon cytoplasm d. the threshold potential is reached e. more sodium channels open

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A bacterial genus that has waxy mycolic acid in the cell walls is

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