IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Process-Aerobic and Anaerobic
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,Aerobic and Anaerobic
Question (2 mark)
Energy released by cellular respiration is needed for movement. Outline one similarity and one difference between aerobic and anaerobic cellular respiration in humans.(2 marks)
▶️Answer/Explanation
Ans:
Accept any reasonable similarity, for example [max 1]
• produce energy or ATP
• use glucose
Accept any reasonable difference, for example [max 1]
• aerobic requires oxygen / anaerobic does not
• waste products are different (water and CO2 or lactic acid)
• anaerobic releases less energy
Question:
Explain whether bacteria that rely on aerobic respiration for their energy could survive in the mesocosm.
▶️Answer/Explanation
Ans: Aerobic bacteria can survive using oxygen from photosynthesizing microbes.
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.