i) Briefly explain the difference between anaerobic and aerobic respiration (2). ii) Which of these reactions produce more energy and briefly describe why?(2)

i) Anaerobic and aerobic respiration are both biochemical reactions (see below): ANAEROBIC RESPIRATIONGlucose = lactic acid + energy releasedAEROBIC RESPIRATIONGlucose + oxygen= carbon dioxide + water + energy releasedFor cells to /survive they need to produce energy for themselves. This is called respiration (anaerobic or aerobic)In aerobic respiration glucose and oxygen are needed. In anaerobic respiration only glucose is neededSo when there isn’t enough oxygen available then anaerobic respiration occurs. ii) Aerobic respiration produces more energy. For energy to be released, chemical bonds are broken (see above*). Far less energy is released from each molecule of glucose in anaerobic respiration compared to aerobic respiration . This is because glucose is not completely broken down and a lot of energy remains stored in lactic acid in the form of chemical bond energy

Answered by Mani C. Biology tutor

2300 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Explain how a change in one amino acid in an enzyme molecule can stop the enzyme working.


What is active transport? Use an example to demonstrate when active transport is used.


What is the product of anaerobic respiration?


Amy has cystic fibrosis which is caused by a recessive allele. Her partner is heterozygous for cystic fibrosis. What is the chance that her future child has cystic fibrosis?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences