Which of the Following Statements Is Not True of Enteroinvasive

question 10

Multiple Choice

Which of the following statements is not true of enteroinvasive E. coli (EIEC) ?

• A) High fever is present.
• B) It invades the gut mucosa.
• C) It makes no heat-labile or heat-stable exotoxins.
• D) Blood and pus are found in the stool.
• E) Prompt treatment with a broad-spectrum antibiotic is essential to recover from an infection.

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Definitions:

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any prior learning.

Extinction

The weakening and eventual disappearance of a learned response; in classical conditioning, it occurs when the conditioned stimulus is no longer paired with the unconditioned stimulus; in operant conditioning, it occurs when a response is no longer followed by a reinforcer.

Conditioned Response

A learned reaction to a previously neutral stimulus that has become associated with an unconditioned stimulus.

Spontaneous Recovery

The reappearance of a learned response after its apparent extinction.