5.7.10 Energy Yield of Aerobic vs Anaerobic Respiration

Question 1

Why does anaerobic respiration have a smaller energy yield?

Answer 1

As in anaerobic respiration glucose is only partially oxidised = only some of its chemical potential energy is released and transferred to ATP
(Only ATP producing reaction is glycolysis - 2 ATP)

Question 2

Why cant the reactions in anaerobic respiration continue into the mitochondria?

Answer 2

As there is no oxygen to act as the final electron acceptor

Question 3

What are the stages involved in aerobic respiration vs anaerobic respiration

Answer 3

Aerobic:
Glycolysis
Link reaction
Krebs cycle
Oxidative phosphorylation
Anaerobic:
Glycolysis
Fermentation

Question 4

How much ATP is produced in aerobic respiration vs anaerobic respiration

Answer 4

Aerobic = high (~36)
Anaerobic = low (2)

Question 5

Compare the sites of aerobic and anaerobic respiration

Answer 5

Aerobic: cytoplasm and mitochondria
Anaerobic: cytoplasm

Question 6

Compare the products of aerobic and anaerobic respiration

Answer 6

Aerobic: CO2, H2O
Anaerobic:
Yeast: CO2, ethanol
Mammals: lactate

Question 7

Is the oxidation of glucose in aerobic respiration complete or incomplete?

Answer 7

Complete

Question 8

Is the oxidation of glucose in anaerobic respiration complete or incomplete?

Answer 8

Incomplete