IP Combined Science Notes (Lower Sec, Year 1-2): 05) Photosynthesis, Nutrition & Cellular Respiration
Download printable cheat-sheet (CC-BY 4.0)10 Dec 2025, 00:00 Z
Reviewed by
Ezekiel Tan·Academic Advisor (Biology)
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Q: What does IP Combined Science Notes (Lower Sec, Year 1-2): 05) Photosynthesis, Nutrition & Cellular Respiration cover?
A: Balance key bioenergetic equations, analyse nutrition experiments, and connect respiration to energy transfer.
Energy flow in living systems depends on both photosynthesis (energy capture) and respiration (energy release). Pair these processes with nutrition to explain growth, maintenance, and activity.
These notes align with MOE's Lower Secondary Science syllabus themes commonly taught in IP Sec 1–2, and act as a bridge into upper-secondary Physics, Chemistry, and Biology.
Status: MOE Lower Secondary Science syllabus (current release) checked 2025-11-30 - scope unchanged; remains the reference for these combined science notes.
Learning targets
- State balanced equations for photosynthesis and aerobic/anaerobic respiration.
- Explain limiting factors of photosynthesis with experimental evidence.
- Describe components of a balanced human diet and consequences of deficiency/excess.
- Interpret calorimetry experiments and calculate energy released per unit mass.
1. Core equations
| Process | Balanced equation | Notes |
| Photosynthesis |
