CAIE IGCSE Biology 12.3.5 Balanced Yeast Respiration Equation

Practise completing and checking the balanced chemical equation for anaerobic respiration in yeast.

Exam points

state C6H12O6 -> 2C2H5OH + 2CO2 with correct formulae and coefficients
use the 1:2:2 ratio to compare glucose, ethanol and carbon-dioxide molecules
distinguish the yeast equation from aerobic respiration and photosynthesis equations

[Maximum number: 2]

Alcohol can be made by the microorganism yeast.
State the balanced chemical equation for the production of alcohol by yeast.

$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{CO}_{2} ; ;$

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