Edexcel International GCSE Biology
Edexcel International GCSE Biology Gas Exchange Exam Questions
Free Edexcel International GCSE Biology exam questions on Gas Exchange, with mark schemes. Covers gas exchange in flowering plants and humans, the effects of smoking and exercise.
Gas Exchange exam questions
These packs of real past exam questions cover the whole of Section 2: Structure and Functions in Living Organisms, including Gas Exchange. Work through every question on this sub-topic, then mark your answers against the mark scheme.
StemUp mark scheme flashcards
Edexcel IGCSE Biology 4BI1 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About Edexcel International GCSE Biology Gas Exchange
This sub-topic covers gas exchange in plants and humans.
What you need to know
- Plants Stomata and the balance of photosynthesis and respiration.
- Humans Lungs, alveoli and ventilation.
- Health Effects of smoking.
Common mistakes in Gas Exchange
- Forgetting plants respire all the time.
- Saying alveoli have thick walls.
Try two Gas Exchange exam-style questions
1. Explain how alveoli are adapted for gas exchange. (2 marks)
Show the mark scheme answer
Thin walls give a short diffusion distance (1); large surface area (1).
2. Give one effect of smoking on the lungs. (1 mark)
Show the mark scheme answer
Damaged cilia or reduced surface area.
Gas Exchange FAQs
What does Gas Exchange cover?
Gas exchange in plants and humans.
Which practical links here?
Hydrogencarbonate indicator with leaves.
Revise this topic with flashcards: Edexcel IGCSE Biology 4BI1 Flashcards, with mark scheme answers for Anki and Quizlet.
