A student is studying a micrograph of a plant cell.
The chloroplast in the micrograph has a measured length of 5.6 cm5.6\text{ cm}5.6 cm. Given that the actual length of this chloroplast is 3.5 μm3.5\ \mu\text{m}3.5 μm, calculate the magnification of the micrograph. Show your working.
Photosynthesis is the chemical process by which plants produce glucose.
Complete the balanced chemical equation for photosynthesis by determining the values of the coefficients aaa and bbb:
aCO2+6H2O→C6H12O6+bO2 a\text{CO}_2 + 6\text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + b\text{O}_2 aCO2+6H2O→C6H12O6+bO2State whether photosynthesis is an endothermic or exothermic reaction.
12 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.