Movement into and out of cells — IGCSE Science - Combined (0653) questions by topic
This narrow but focused set tests osmosis directly, asking which substance passes through a membrane by this specific process, filling gaps in a formal osmosis definition, and classifying oxygen entering red blood cells correctly against diffusion, evaporation and transpiration as alternatives. Identify is the only command word in play, always demanding a single correct term picked from options rather than a written explanation.
All 5 real questions are drawn from 2025 papers and are worth 1 mark each, so precision on definitions matters more than length of answer. Practising with instant marking is well suited here, since it flags immediately whether the direction of movement, from dilute towards concentrated, has been swapped for the correct one in an osmosis answer.
May–June 2025, Paper 11
Which substance moves through a partially permeable membrane by osmosis? A amino acids B oxygen C sugar D water
Answer this question and get it marked →May–June 2025, Paper 12
Oxygen gas moves into red blood cells from the alveoli. What is this process? A diffusion B evaporation C osmosis D transpiration
Answer this question and get it marked →May–June 2025, Paper 21
Osmosis can be defined as the net movement of ......1...... molecules from a region of ......2...... water potential to a region of ......3...... water potential, through a…
Answer this question and get it marked →May–June 2025, Paper 22
Which row describes osmosis? osmosis is the net movement of water molecules through a partially permeable membrane: from to --- --- --- A a dilute solution with a higher water…
Answer this question and get it marked →May–June 2025, Paper 23
Which row about osmosis is correct? molecules that move details of movement type of permeable membrane --- --- --- --- A water from a dilute solution to a concentrated solution…
Answer this question and get it marked →Other IGCSE Science - Combined topics
- Practical skills (96)
- Motion, forces and energy (53)
- Electricity and magnetism (38)
- Waves (32)
- Human nutrition (23)
- Acids, bases and salts (22)
- Organisms and their environment (21)
- Organic chemistry (21)
- Reproduction (20)
- Thermal physics (20)
- Plant nutrition (19)
- The Periodic Table (18)