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O-Level Combined Science, Biology: Plants and Nutrition module quiz (SEAB 5077/5078) quiz

14questions. Pick an answer and you'll see why right away.

  1. What is an enzyme?

  2. The lock and key model explains that enzymes are specific because

  3. Why does enzyme activity drop sharply above the optimum temperature?

  4. Once an enzyme has been denatured by heat and is then cooled, its activity

  5. Which nutrient is the body's main source of energy?

  6. Which test and result correctly identifies starch?

  7. Which is the correct word equation for photosynthesis?

  8. Which factor is NOT a limiting factor of photosynthesis at O-Level?

  9. Which leaf feature increases the surface area for absorbing light?

  10. Where in the leaf is most photosynthesis carried out?

  11. What does the xylem transport in a plant?

  12. Transpiration is the

  13. Which change would increase the rate of transpiration?

  14. Which nutrient is needed mainly for growth and the repair of tissues?