DP Biology (first assessment 2025)

Question 22M.2.SL.TZ2.b

Date	May 2022	Marks available	[Maximum mark: 7]	Reference code	22M.2.SL.TZ2.b
Level	SL	Paper	2	Time zone	TZ2
Command term	Compare and contrast	Question number	b	Adapted from	N/A

[Maximum mark: 7]

22M.2.SL.TZ2.b

The processes of photosynthesis and respiration have some factors in common and others differ. Compare and contrast both processes for specific factors.

[7]

Markscheme

Examiners report

The comparison of the processes of cellular respiration and photosynthesis was done effectively. Some very good and well-organized answers were noted. It was common for students to use a table to organize their answers. Some correct answers contained full descriptions of the Calvin and the Krebs cycle, which was unnecessary.

Syllabus sections

C. Interaction and interdependence » C1.2. Cell respiration » C1.2.4. Cell respiration as a system for producing ATP within the cell using energy released from carbon compounds

B. Form and function » B4.2. Ecological niches » B4.2.3. Photosynthesis as the mode of nutrition in plants, algae and several groups of photosynthetic prokaryotes

Question 22M.2.SL.TZ2.b

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