I don't understand anaerobic respiration and what an 'oxygen debt' is?

Respiration can be broken down into 'aerobic' and 'anaerobic' respiration. Aerobic respiration needs oxygen to be carried out, whereas anaerobic respiration takes place without oxygen. Glucose is broken down into lactic acid, which builds up in muscles and causes the 'cramping' feeling you get if you exercise intensely. Oxygen is needed to break down this lactic acid into carbon dioxide and water. This is known as the 'oxygen debt' and explains why you breathe more deeply after vigorous exercise. This is the equation for anaerobic respiration in muscle cells:glucose → lactic acidC6H12O6 → 2C3H6O3 It's important to remember that anaerobic respiration releases a lot less energy than aerobic respiration. Anaerobic respiration also occurs in yeast - producing the carbon dioxide that helps bread rise.

Answered by Kajol M. Biology tutor

9922 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

How does a reflex arc work?


a) Plants need energy to make glucose. How do plants get this energy?


Explain the process of how giraffes may have evolved to have long necks (6 marks)


Explain the stages of mitosis.


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences