A Drug That Prevents the Breakdown of Acetylcholine at Synapses

question 81

Multiple Choice

A drug that prevents the breakdown of acetylcholine at synapses is an example of an:

• A) antagonist.
• B) accelerant.
• C) blocker.
• D) agonist.

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Definitions:

Carbon Dioxide Fixation

The process by which inorganic carbon dioxide is converted into organic compounds by living organisms, principally during photosynthesis.

Calvin Cycle

A set of chemical reactions that take place in the chloroplasts of photosynthetic organisms to synthesize glucose from carbon dioxide and water, using ATP and NADPH produced in the light reactions.

Rubisco

An enzyme involved in the first major step of carbon fixation, a process by which atmospheric carbon dioxide is converted by plants to energy-rich molecules.

Photorespiration

The process that reduces the efficiency of photosynthesis in C3 plants during hot spells in summer; consumes oxygen and produces carbon dioxide through the degradation of Calvin cycle intermediates.