What is osmosis?

A Movement of solute from high to low concentration

B Movement of water across a semipermeable membrane

C Active transport of ions

D Cell division

✓ Correct Answer: Option B

Osmosis is the passive movement of water molecules across a semipermeable membrane from low to high solute concentration.

💡 Why is B) the correct answer?

The correct answer to the question "What is osmosis?" is Option B: Movement of water across a semipermeable membrane.

The other options — A) Movement of solute from high to low concentration, C) Active transport of ions, D) Cell division — are incorrect for this ACT Exam Prep question. As explained above: Osmosis is the passive movement of water molecules across a semipermeable membrane from low to high solute concentration.

📚 About This ACT Exam Prep Practice Question

This 2-level ACT Exam Prep question from the Science topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free ACT Exam Prep practice test or use flashcards for spaced repetition review.

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What is osmosis?

✓ Correct Answer: Option B

📚 About This ACT Exam Prep Practice Question

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