SAT Reading and Writing Practice Question #1673 (Medium (570)) | Test Citadel
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SAT Reading and Writing Difficulty: Medium (570)

Digital SAT Reading and Writing Practice Question #1673

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While researching marine bioluminescence, a student took the following notes: - Pyrocystis fusiformis is a single-celled marine dinoflagellate. - When agitated by ocean waves or passing predators, it emits a vivid blue-green flash of light. - The light reaction is catalyzed by the enzyme luciferase acting upon the substrate luciferin. - The bioluminescent flash functions as a 'burglar alarm' defense, startling grazers and exposing them to higher-order predators. The student wants to introduce Pyrocystis fusiformis to an audience unfamiliar with marine microbiology. Which choice most effectively accomplishes this goal?
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Goal is to INTRODUCE the organism -> Must name Pyrocystis fusiformis and define what it is.

Masterclass Solution & Distractor Trap Analysis

Choice C names the organism, defines what it is (single-celled marine organism), and explains its defining characteristic (blue-green bioluminescent flash), making it the ideal introductory statement....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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