Cell BiologyExam Tips

Exam Success Tips

Part of Cell Transport · GCSE GCSE Biology revision

This exam tips covers Exam Success Tips within Cell Transport for GCSE Biology. Diffusion, osmosis, active transport, factors affecting transport, surface area to volume ratio, and practical investigations It is section 18 of 19 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.

Topic position

Section 18 of 19

Practice

23 questions

Recall

20 flashcards

📝 Exam Success Tips

🎯 Definition Questions

Always mention direction of movement
State whether energy is required
Include concentration gradient information
For osmosis, specify WATER movement through partially permeable membrane

📊 Practical Questions

State all variables that should be controlled
Explain how to make measurements more accurate
Calculate percentage change correctly
Link results to concentration differences

🧮 Calculation Questions

Show all working clearly
Convert units if necessary
Simplify ratios to smallest whole numbers
Check your answer makes biological sense

💡 Explanation Questions

Link structure to function
Explain how adaptations increase efficiency
Use correct scientific terminology
Give specific examples when possible

📋 Edexcel 1BI0 Specific Advice:

Edexcel Paper 1 (1BI0/1) frequently presents osmosis data in a table or graph — read axes carefully and extract the isotonic point (where mass change = 0) as evidence for the cell's water potential
For active transport "Suggest" questions, always write the full chain: mitochondria → aerobic respiration → ATP → used by carrier proteins → ions/molecules moved against the concentration gradient
In 6-mark extended responses, make sure you reference ANY stimulus material given (data table, passage) — Edexcel mark schemes credit students who refer to the context
Edexcel accepts "energy" instead of "ATP" and "semi-permeable" instead of "partially permeable" — but using the more precise term always demonstrates stronger biology

Keep building this topic

Read this section alongside the surrounding pages in Cell Transport. That gives you the full topic sequence instead of a single isolated revision point.

How This Topic Appears in Exams Knowledge Organiser: Cell Transport The Cell's Transport System Cell Transport — Tap to Explore the 3 Mechanisms

Practice Questions for Cell Transport

Which statement best describes diffusion?

A. The movement of particles from a region of low concentration to high concentration
B. The net movement of particles from a region of high concentration to low concentration
C. The movement of water molecules through a partially permeable membrane
D. The movement of particles using energy from respiration

1 markfoundation

Explain how osmosis causes a plant cell to become plasmolysed when placed in a concentrated sugar solution.

3 marksstandard

Quick Recall Flashcards

Define diffusion

The movement of particles from an area of high concentration to an area of low concentration down a concentration gradient. No energy is required (passive process).

Define osmosis

The movement of water molecules from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration) through a semi-permeable membrane.

23 questions on Cell Transport — practise free

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How This Topic Appears in Exams

Knowledge Organiser: Cell Transport