Latrotoxin, Produced by the Poisonous Black Widow Spider, Increases the Release

question 68

Multiple Choice

Latrotoxin, produced by the poisonous black widow spider, increases the release of acetylcholine. How do muscle cells respond?

• A) Muscle cells will twitch irregularly when excess acetylcholine exists.
• B) Muscle cells will experience fused or complete tetanus when excess acetylcholine exists.
• C) Muscle cells will become paralyzed when excess acetylcholine exists.
• D) Muscle cells will experience a longer latent period when excess acetylcholine exists.

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Definitions:

Mental Age

A measure of intelligence test performance devised by Binet; the level of performance typically associated with children of a certain chronological age. Thus, a child who does as well as an average 8-year-old is said to have a mental age of 8.

Binet and Simon

Alfred Binet and Theodore Simon, psychologists who developed the first practical intelligence test, the Binet-Simon scale, to assess cognitive abilities in children.

Aptitude Test

A test designed to predict a person’s future performance; aptitude is the capacity to learn.

Automobile Mechanic

A professional who specializes in repairing, maintaining, and sometimes modifying vehicles.