Movement into and out of cells — IGCSE Sciences - Co-Ordinated (0973) questions by topic
Movement into and out of cells covers net oxygen diffusion across a membrane, a potato's mass change in sugar solution, ranking gas diffusion rates by molecular formula, and naming osmosis through a partially permeable membrane, worth from 1 to 10 marks.
Identify, state and suggest lead the command words in this IGCSE Co-ordinated Sciences topic, with complete and draw also common: draw a single labelled arrow rather than several, and suggest a reason grounded in concentration gradient. 11 real questions from 2023 to 2025 papers are gathered here. Submit each answer for instant marking to see exactly which term, such as diffusion versus osmosis, the mark scheme actually rewards.
May–June 2025, Paper 11
What is the name of the process where water passes into and out of cells through a partially permeable membrane? A diffusion B evaporation C osmosis D transpiration
Answer this question and get it marked →May–June 2025, Paper 12
The diagram shows the stages of an experiment. A piece of potato of mass 10.0 g is placed in a beaker of dilute sugar solution and left for 30 minutes. It is then carefully dried…
Answer this question and get it marked →May–June 2025, Paper 21
Information about four gases is shown. gas molecular formula --- --- ammonia NH3 butane C4H10 carbon dioxide CO2 chlorine Cl2 Which gas has the greatest rate of diffusion? A…
Answer this question and get it marked →May–June 2025, Paper 22
The mass of a peeled potato is recorded. The potato is put in a salt solution with a lower water potential than the potato for two hours. The outside of the potato is then dried…
Answer this question and get it marked →May–June 2024, Paper 12
By which process does oxygen pass from the alveoli to the blood capillaries in the lungs? A diffusion B osmosis C secretion D transpiration
Answer this question and get it marked →May–June 2024, Paper 21
Which conditions will result in the fastest rate of diffusion? A temperature high, concentration gradient large, diffusion distance short B high, small, long C low, small, short D…
Answer this question and get it marked →October–November 2024, Paper 41
Potato cylinders are placed in sucrose solutions of different concentrations. Table 7.1 shows the results. concentration of sucrose (mol/dm³) initial mass (g) final mass (g)…
Answer this question and get it marked →May–June 2023, Paper 21
What is meant by osmosis? A the net movement of water molecules from a region of higher water potential to a region of lower water potential through a cell wall B the net movement…
Answer this question and get it marked →May–June 2023, Paper 32
Fig. 10.1 is a diagram representing the concentration of oxygen molecules outside and inside a cell (more outside than inside), with the membrane labelled X. On Fig. 10.1, draw…
Answer this question and get it marked →May–June 2023, Paper 41
Fig. 10.1 shows two red blood cells after they have been immersed in different solutions for an hour. Cell A was immersed in a concentrated salt solution (and appears…
Answer this question and get it marked →October–November 2023, Paper 21
When a plant cell is put into a solution that has a lower water potential than the cell, the cytoplasm can pull away from the cell wall. What is the term for this? A flaccid B…
Answer this question and get it marked →Other IGCSE Sciences - Co-Ordinated topics
- Motion, forces and energy (77)
- Electricity and magnetism (65)
- Practical skills (60)
- Organic chemistry (40)
- Waves (40)
- Atoms, elements and compounds (29)
- Organisms and their environment (28)
- Stoichiometry (24)
- Chemical reactions (22)
- The Periodic Table (22)
- Human nutrition (21)
- Reproduction (21)