Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the role of nitrogen in the ecological cycle?

To store energy
To act as a catalyst
To improve cell structure
To act as a nutrient

The correct answer is: To act as a nutrient

Nitrogen plays a crucial role in the ecological cycle as it is an essential nutrient for all living organisms. It is a major component of proteins and DNA, which are essential for the growth and development of organisms. Option A, storing energy, is incorrect because nitrogen is not a primary source of energy for organisms. Option B, acting as a catalyst, is incorrect because nitrogen does not speed up chemical reactions. Option C, improving cell structure, is incorrect because nitrogen does not directly contribute to the physical structure of cells.