iGCSE Biology (0610)-12.3 Anaerobic respiration – iGCSE Style Questions Paper 1

Question

What are the products of anaerobic respiration in yeast?

  1. alcohol + carbon dioxide

  2. alcohol + oxygen

  3. lactic acid + carbon dioxide

  4. lactic acid + oxygen

Answer/Explanation

Ans : A

Question

Yeast is placed inside a container full of a glucose solution with no air.
Which word equation summarizes the process that takes place inside the container?

A glucose → ethanol + carbon dioxide
B glucose → lactic acid
C glucose + oxygen → carbon dioxide + water
D glucose + oxygen → ethanol

Answer/Explanation

Ans: A

Question

What is the equation for anaerobic respiration in yeast?
       A  glucose + oxygen → carbon dioxide + water
       B  glucose → alcohol + carbon dioxide
       C  glucose → alcohol + water
       D  glucose → lactic acid + water

Answer/Explanation

Ans: B

Question

Which word equation represents anaerobic respiration in human muscle?

A    glucose → carbon dioxide + ethanol (alcohol)
B    glucose → carbon dioxide + lactic acid
C    glucose → ethanol (alcohol)
D    glucose → lactic acid

Answer/Explanation

Ans:    D

Question

Four word equations are shown.
                  P        carbon dioxide + water → glucose + oxygen
                  Q       glucose + oxygen → carbon dioxide + water
                  R       glucose → lactic acid
                  S        glucose → alcohol + carbon dioxide
What are the equations for anaerobic respiration in humans and anaerobic respiration in yeast?

             

Answer/Explanation

Ans: D

Scroll to Top