Cell Biology Practice (Interactive)
Intuition
Cell biology practice is like laboratory work, each problem develops skills in observation, analysis, and experimental design: Mastering cell biology requires connecting structure to function at the molecular, cellular, and organism levels
Why it matters: Cell biology knowledge is essential for medicine, biotechnology, and understanding disease mechanisms
The key insight: Mastering cell biology requires connecting structure to function at the molecular, cellular, and organism levels
IB Biology, Cell Biology Practice
10 auto-graded practice problems at medium to hard difficulty, aligned to the IB Biology syllabus (SL/HL). Select an answer, submit, and review the explanation.
Cell Structure
Membranes
Cell Division
Transport
Common Mistakes
Confusing active transport with facilitated diffusion: Active transport moves against the gradient using energy. Facilitated diffusion moves down the gradient without energy. Don’t use them interchangeably.
Forgetting that the Na⁺/K⁺ pump uses ATP: It’s an active transport mechanism that moves 3 Na⁺ out and 2 K⁺ in per ATP. Without ATP, the resting potential cannot be maintained.
Mixing up osmosis with diffusion: Osmosis is specifically the movement of water across a semi-permeable membrane. Diffusion is the general movement of any particle from high to low concentration.
Cross-References
- Cell Biology: Cell biology covers structures and functions
- Genetics: Genetics is a core biology topic
- Ecology: Ecology studies populations and communities