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 are the four macromolecules essential to life?

Glucose, sodium, potassium, magnesium
Nucleic acids, lipids, proteins, carbohydrates
Mitochondria, ribosomes, lysosomes, centrioles
Chloroplasts, vacuoles, cell wall, nucleolus

The correct answer is: Nucleic acids, lipids, proteins, carbohydrates

While glucose, sodium, potassium, and magnesium are important to various biological processes, they are not macromolecules. They are either elements or simple molecules. Choices C and D refer to cell organelles, which are not macromolecules either. These organelles may contain macromolecules, but they themselves are not classified as macromolecules. Nucleic acids, lipids, carbohydrates, and proteins are the four macromolecules essential to life because they play critical roles in cellular functions such as energy storage and transfer, genetic information storage and transfer, and structural support and protection. They are large molecules made up of smaller subunits and are essential for the function and survival of living organisms.