IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Process-Cell Respiration
Topic :Process– Weightage : 21 %
All Questions for Topic : Photosynthesis; transport in plants; xylem; phloem; transpiration and translocation; roots; tropisms; monocots and dicots; structure of leaf and stem; rate of transpiration and factors affecting it;Cell Respiration
Question:
State which group of organisms releases most energy in the form of heat from respiration.
▶️Answer/Explanation
Ans: Bacteria and other microbes release the most heat.
Question:
a) Of the 4960 kJ of energy that the detritivores take in, 33.7% is lost as heat. Calculate the percentage of the energy taken in by carnivores that is lost from them as heat.
▶️Answer/Explanation
Ans: (1705/2790)×100% = 61.1%
b) Suggest reasons for the difference in the percentage of energy taken in that is lost as heat.
▶️Answer/Explanation
Ans: Carnivores are more active; carnivores use energy to hunt prey.