Question 1:
State the meaning of aerobic respiration.
State the meaning of aerobic respiration.
Answer:
Aerobic respiration is the breakdown of glucose in the presence of oxygen to produce chemical energy.
Question 2:
Suggest another substrate apart from glucose that can be used by cells for cellular respiration.
Suggest another substrate apart from glucose that can be used by cells for cellular respiration.
Answer:
Fructose, galactose.
Question 3:
State the word equation for aerobic respiration.
State the word equation for aerobic respiration.
Answer:
Glucose + oxygen —> carbon dioxide + water + energy
Question 4:
Describe the processes involved in aerobic respiration to produce energy.
Describe the processes involved in aerobic respiration to produce energy.
Answer:
Sugar breakdown (glycolysis) takes place in the cytoplasm. Glucose (6-carbon) is broken down to two pyruvate molecules (3-carbon). In the next stage, pyruvate is oxidised through a series of reactions to produce carbon dioxide, water and energy. This stage takes place in the mitochondrion.