The statements are about respiration.
- Aerobic respiration releases more energy per unit mass of glucose than anaerobic respiration.
- Aerobic respiration in muscles causes an oxygen debt to occur.
- Aerobic respiration forms carbon dioxide as the only waste product.
- Reduced aerobic respiration will limit the active uptake of mineral ions in the kidney tubules.
- When there is little oxygen available to muscles only anaerobic respiration occurs.
- Anaerobic respiration forms lactic acid as a waste product.
Which statements are correct?
Answer is 1,4,6
Could someone explain this?
1 is correct because Aerobic Respiration involves the Glycolysis & the Electron Transport Chain where a large amount of ATP is produced (per glucose molecule). While Anaerobic Respiration simply involves Glycolysis where only 2 ATP molecules are made per cycle.
2 is incorrect because Oxygen Debt (EPOC) occurs when the body creates lactic acid and then needs extra oxygen to break it down before actually functioning normally
3 is incorrect because CO2 and H2O are waste products of Aerobic Respiration, not just CO2. (This sounds strange, but H2O is a waste product because the purpose of Aerobic Respiration is to create ATP)
4 is correct because the reabsorption of mineral ions in the kidney require active diffusion (and therefore ATP) to move the ions from low concentration to a high(er) concentration (the cells lining the PCT)
5 is incorrect since muscles always do aerobic respiration when there is even the slightest amount of oxygen in the blood. (so both aerobic and anaerobic would be occurring)
6 is correct since one type of anaerobic respiration (the one in mammals) produces lactic acid, which is a byproduct of producing ATP.
Thank you very much for the clear explanation.