Respiring seeds in a thermos flask raise the temperature of their surroundings because
Correct answer: D. respiration releases part of glucose's energy as heat
- A. photosynthesis gives off heat
- B. the seed coat is an insulator
- C. cellulose decomposes spontaneously
- D. respiration releases part of glucose's energy as heat
Explanation
Only a fraction of the energy released in respiration is trapped in ATP; the rest escapes as heat, which germinating seeds in bulk can visibly produce. Photosynthesis cannot occur in darkness, so warmth in a flask of seeds is respiration measured.
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 reduced coenzyme NADH produced in glycolysis in the cytoplasm reaches the electron transport chain by
Which two stages of aerobic respiration generate ATP directly by substrate level phosphorylation?
A marathon runner who trains at altitude increases the capacity of the blood to carry oxygen. The direct benefit to respiration is
In respiration, the oxidation of a substrate molecule essentially means the
Anaerobic respiration releases much less energy per glucose than aerobic respiration because
For each molecule of glucose completely respired, the total number of carbon dioxide molecules released is