Summary questions 1. Copy and complete the sentences.
In a chemical reaction, two or more substances called ____________ combine to form a new substance called a ____________. The chemical reactions that occur in cells are called ____________ processes.
2. a. What is aerobic respiration? b. Where does aerobic respiration take place?
3. Place a tick () in the correct column to identify the reactants and products of respiration. Reactant
Product
Glucose Carbon dioxide Oxygen Water
4. Copy and complete the word equation for aerobic respiration. _________________ + _________________ energy + __________________ + __________________
5. a. Explain how anaerobic respiration differs from aerobic respiration. b. Name two useful products that are made by organisms that respire anaerobically.
6. The rate of respiration is controlled by enzymes. Name two factors that affect the rate at which enzymes work.
7. a. What is photosynthesis? b. Where does photosynthesis take place in cells?
8. Match the reactants and products of photosynthesis to their descriptions. Reactant/product