carbon dioxide glucose (2 marks)   → AQA, 2012 Some of the glucose produced in photosynthesis is converted to 0 2 . 2 other substances. Name one of these other substances and state that the substance is used for. Substance: Use: (2 marks) During the process of photosynthesis, energy is transferred from 0 2 . 3 the environment to the chloroplasts by light. State what type of reaction this is. (1 mark) Plants may grow faster if they have more carbon dioxide. 0 3 Indigestion tablets dissolve in water to form a solution. This solution slowly gives off carbon dioxide. A student set up an investigation to see what concentration of carbon dioxide is best for increasing the growth of geranium plants. The student: put a geranium plant in a clear plastic bag. put a dish containing water and one tablet in the bag. sealed the top of the bag. set up five more experiments, each with and a different number of tablets left all the plants in a well-lit place for 4 weeks. The student’s experimental set up is shown in Figure 1. Figure 1 The student used a plastic bag, not a black plastic bag. 0 3 . 1 Explain why.
carbon dioxide  → glucose  (2 marks) AQA, 2012 0 2 . 2 Some of the glucose produced in photosynthesis is converted to other substances. Name one of these other substances and state that the substance is used for. Substance: Use: (2 marks) 0 2 . 3 During the process of photosynthesis, energy is transferred from the environment to the chloroplasts by light. State what type of reaction this is. (1 mark) 0 3 Plants may grow faster if they have more carbon dioxide. Indigestion tablets dissolve in water to form a solution. This solution slowly gives off carbon dioxide. A student set up an investigation to see what concentration of carbon dioxide is best for increasing the growth of geranium plants. The student: put a geranium plant in a clear plastic bag. put a dish containing water and one tablet in the bag. sealed the top of the bag. set up five more experiments, each with and a different number of tablets left all the plants in a well-lit place for 4 weeks. The student’s experimental set up is shown in Figure 1. Figure 1 0 3 . 1 The student used a plastic bag, not a black plastic bag. Explain why.