Topic 7A - Muscles and Respiration

Question 1

EQ. The hydrogen (H) from the Krebs cycle enters the electron transport chain and oxidative phosphorylation occurs. Explain what is meant by the term oxidative phosphorylation. (3 marks)

Answer 1

• electrons pass down the electron transport chain
• and lose energy
• energy lost is used to add a Pi to ADP to make ATP

Question 2

Name the 2 types of anaerobic respiration

Answer 2

• lactate fermentation

- ethanol fermentation

Question 3

State the process of lactate fermentation

Answer 3

pyruvate is converted to lactate via lactate dehydrogenase

Question 4

State the process of ethanol fermentation

Answer 4

pyruvate is converted to ethanol via ethanol dehydrogenase