The oxygen debt of a sprinter is best described as
Correct answer: A. the extra oxygen needed after the race to oxidise accumulated lactate
- A. the extra oxygen needed after the race to oxidise accumulated lactate
- B. the oxygen permanently lost from haemoglobin
- C. the oxygen stored in myoglobin
- D. the oxygen needed for the Krebs cycle during the race
Explanation
During intense effort lactate builds up because oxygen supply lags behind, and afterwards heavy breathing continues until the lactate is reconverted, mainly in the liver. Heavy breathing after the race is the visible sign of repaying this debt.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Cellular Respiration questions
The anaerobic respiration of yeast is economically useful because the carbon dioxide it releases
The reactions of the Krebs cycle take place in the
Which stage of aerobic respiration produces the largest number of ATP molecules per glucose?
Fermentation is best defined as the breakdown of glucose
Compared with the 36 to 38 ATP of aerobic respiration, anaerobic respiration in a human muscle cell yields
Mature human red blood cells obtain all of their ATP from