Mary Takes a Course in Which She Is Tested Every

question 246

Multiple Choice

Mary takes a course in which she is tested every two weeks.Her studying falls off right after a test,followed by a gradual increase to a rapid rate of studying as the next test approaches.Her studying conforms to the typical pattern of responding maintained on

• A) fixed-ratio schedules.
• B) variable-ratio schedules.
• C) fixed-interval schedules.
• D) variable-interval schedules.

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Definitions:

Pathogenic

Capable of causing disease; refers to microorganisms or agents that can produce an illness when they invade a host organism.

Decomposers

Organisms that break down dead or decaying organisms, turning organic material into simpler substances and recycling nutrients in the ecosystem.

Photosynthesize

The process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose, using carbon dioxide and releasing oxygen.

Spirochete

A long, flexible, helical bacterium. Compare with spirillum, vibrio, bacillus, and coccus.