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8.1 Exchange surfaces and diffusion

Why does oxygen enter animals?

A

Oxygen enters animals as a waste product.

B

Oxygen enters animals for anaerobic respiration.

C

Oxygen enters animals for photosynthesis.

D

Oxygen enters animals for aerobic respiration.

8.1 Exchange surfaces and diffusion Flashcards

  1. GCSE
  2. /Biology
  3. /8.1 Exchange surfaces and diffusion

Flashcards for Edexcel GCSE Biology 8.1 Exchange surfaces and diffusion, covering the key terms, definitions and processes you need to recall for Paper 1 and Paper 2. 20 cards drawn from 8.1.1 Introduction to exchange and transport, 8.1.2 Alveoli adapted for gas exchange, 8.1.3 Factors affecting rate of diffusion, and 8.1.4 Rate of diffusion using Fick's law, matched to the Edexcel GCSE Biology (1BI0) specification. Recall questions account for roughly 40% of marks at GCSE Biology, so these target the marks you can secure before the paper starts.