Question 1: Define the chemical reaction of photosynthesis using the reactants and products involved.

Answer: Photosynthesis is a process where carbon dioxide and water are converted into glucose and oxygen using light energy, represented by the equation: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2.

Question 2: Which molecules are the primary reactants in photosynthesis?

Answer:

Question 3: Fill in the blank: The process of photosynthesis occurs mainly in the ______ of plant cells.

Answer: chloroplasts

Question 4: Describe the role of light energy in the photosynthesis reaction.

Answer: Light energy is absorbed by chlorophyll in the chloroplasts, providing the energy needed to convert carbon dioxide and water into glucose and oxygen.

Question 5: Explain why water is considered a reactant in photosynthesis.

Answer: Water provides the electrons and protons necessary for the chemical reactions of photosynthesis and releases oxygen as a byproduct.

Question 6: Calculate the amount of oxygen produced when 12 moles of glucose are formed, assuming the reaction proceeds completely.

Answer: 12 moles of oxygen

Question 7: Identify the main enzyme involved in the light-dependent reactions of photosynthesis.

Answer: The enzyme is ATP synthase.

Question 8: Name one practical application of understanding the photosynthesis reaction in industry or technology.

Answer: Developing artificial photosynthesis systems to produce renewable energy or oxygen.

Question 9: Describe an experiment to demonstrate the role of light in photosynthesis, including variables and safety precautions (theory only).

Answer: An experiment can involve placing Elodea aquatic plants in water under different light conditions. The independent variable is light exposure; the dependent variable is oxygen bubble production. Control variables include water temperature and concentration of CO2. Safety precautions include handling water and plant materials carefully and avoiding direct contact with any chemicals used in the process.

Question 10: Based on data showing increased oxygen production under higher light intensities, explain how light intensity affects the rate of photosynthesis.

Answer: Higher light intensity provides more energy for the chlorophyll molecules, increasing the rate of the light-dependent reactions, which in turn accelerates overall photosynthesis until a saturation point is reached.