Anaerobic respiration
10.3What the syllabus asks of you
- Describe anaerobic respiration as the release of a relatively small amount of energy by the breakdown of glucose without using oxygen
- State the word equation for anaerobic respiration in humans
- State the word equation for anaerobic respiration in yeast
- Explain why lactic acid builds up in muscles and blood during vigorous exercise causing Excess Post‑exercise Oxygen Consumption (EPOC) or an ‘oxygen debt’
- Outline how the oxygen debt is removed after exercise, limited to: (a) continuation of fast heart rate to transport lactic acid in blood from muscles to the liver (b) continuation of deeper and faster breathing to supply oxygen for the breakdown of lactic acid in the liver
Read the notes first
Chapter 10: Anaerobic respiration
Drill this topic
Every question on Anaerobic respiration, untimed, marked as you go.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
8 questions
1Oct / Nov 2020 · Paper 11 · Q16Show mark scheme →
Aalcohol, carbon dioxide and a high energy yield
Balcohol, carbon dioxide and a low energy yield
Ccarbon dioxide, water and a high energy yield
Dcarbon dioxide, water and a low energy yield
Mark scheme
2Oct / Nov 2020 · Paper 12 · Q16Show mark scheme →
Acarbon dioxide
Bglucose
Clactic acid
Doxygen
Mark scheme
3Oct / Nov 2020 · Paper 12 · Q17Show mark scheme →
AP amylase, Q starch, R oxygen
BP bacterium, Q amino acids, R nitrogen
CP fungus, Q glucose, R carbon dioxide
DP virus, Q sucrose, R water vapour
Mark scheme
4May / June 2020 · Paper 11 · Q26Show mark scheme →
Athe conversion of milk into yoghurt by bacteria
Bthe formation of lactic acid in cheese production by bacteria
Cthe release of alcohol by the action of yeasts on sugars
Dthe synthesis of single cell protein in fermenters
Mark scheme
5May / June 2020 · Paper 12 · Q16Show mark scheme →
Abreathing
Bsleeping
Csprinting 100 metres
Dwalking to school
Mark scheme
6Oct / Nov 2019 · Paper 11 · Q16Show mark scheme →
Acarbon dioxide
Bethanol
Clactic acid
Dwater
Mark scheme
7Oct / Nov 2019 · Paper 12 · Q16Show mark scheme →
Aglucose + carbon dioxide → lactic acid
Bglucose → alcohol + carbon dioxide
Cglucose → lactic acid
Dglucose → lactic acid + carbon dioxide
Mark scheme
8May / June 2019 · Paper 11 · Q16Show mark scheme →
AIt only happens in the cells of the lungs.
BIt only happens when oxygen supply exceeds oxygen demand.
CIt releases carbon dioxide.
DIt releases less energy than aerobic respiration.
Mark scheme