CAIE IGCSE Biology 12.3.3 Word Equation for Anaerobic Questions

Practise the yeast anaerobic word equation, linking glucose to alcohol and carbon dioxide when interpreting fermentation and gas-production evidence.

Exam points

Write or identify glucose → alcohol + carbon dioxide as yeast’s anaerobic word equation
Infer carbon dioxide as a yeast product from limewater, balloon or bread-making evidence

[Maximum number: 1]

What is the word equation for anaerobic respiration in yeast?

glucose → alcohol + carbon dioxide

glucose → alcohol

glucose → lactic acid + carbon dioxide

glucose → lactic acid

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