| Organelle | Function | Plant / Animal | |-----------|----------|----------------| | | Controls cell activities, contains DNA | Both | | Cytoplasm | Site of chemical reactions | Both | | Cell membrane | Controls entry/exit of substances | Both | | Mitochondria | Aerobic respiration (produces ATP) | Both | | Ribosomes | Protein synthesis | Both | | Cell wall (cellulose) | Provides strength & support | Plant only | | Chloroplasts | Photosynthesis (contains chlorophyll) | Plant only | | Vacuole (large central) | Stores sap, maintains turgor pressure | Plant only |
The Textbook says: "A Punnett square predicts genotype ratios." Better Note Strategy: biology o level 5090 notes better
| Command | What you must do in notes | |---------|----------------------------| | Draw a large diagram | Include a title, sharp pencil lines, no shading, label lines with rulers | | Describe the trend | "As X increases, Y increases/decreases until..." | | Suggest a source of error | "Uncontrolled temperature" OR "Human reaction time with stopwatch" | | Explain how to improve | "Repeat and calculate mean" + "Use a data logger for continuous recording" | | Organelle | Function | Plant / Animal
20% Questions will be based on the experimental skills. AO3 Experimental skills and investigations. Total. 100. Cambridge International Education Biology 5090 O Level Notes | CAIE | PapaCambridge sharp pencil lines