CourseCourseConceptConceptDocsDocuments

AP Biology 2.7 A Explain How Concentration Gradients Affect the Movement of Molecules Across Membranes Questions

Practise AP Biology 2.7.A questions by predicting water movement from tonicity and water potential, then using solute gradients or mass-change data to justify it.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • predict water movement from hypotonic, hypertonic and isotonic conditions
  • calculate water potential from solute concentration or mass-change data
  • link solute gradients to cell swelling, shrinking or vacuole expansion

AP Biology 2.7 A Explain How Concentration Gradients Affect the Movement of Molecules Across Membranes Questions question 1

[Maximum number: 1]

A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The membrane permits the movement of water but not salt. The student wants to vary the rate of osmosis that occurs across the membrane. Which of the following experimental designs will result in the fastest net rate of water movement into chamber A?

A

Placing salt water in chamber A and distilled water in chamber B

B

Placing distilled water in both chambers

C

Placing distilled water in chamber A and salt water in chamber B

D

Placing salt water in both chambers

All question bank results loaded