Question 1: Define the chemical reaction of Photosynthesis using the symbols for the reactants and products.

Answer: 6CO2 + 6H2O → C6H12O6 + 6O2

Question 2: Explain the role of sunlight in the Photosynthesis reaction.

Answer: Sunlight provides the energy necessary to drive the chemical reactions that convert carbon dioxide and water into glucose and oxygen.

Question 3: Calculate the amount of glucose produced if 12 moles of carbon dioxide are used in Photosynthesis.

Answer: 2 moles of glucose (C6H12O6) are produced because the reaction shows that 6 moles of CO2 produce 1 mole of glucose.

Question 4: Identify the primary pigment involved in capturing light energy during Photosynthesis.

Answer:

Question 5: Fill in the blank: The oxygen released during Photosynthesis comes from the ________ molecule, not water.

Answer: carbon dioxide

Question 6: Describe the two main stages of Photosynthesis and where they occur within the chloroplast.

Answer: The two main stages are the Light Dependent Reactions, which occur in the thylakoid membranes and require sunlight to produce ATP and NADPH; and the Light Independent Reactions (Calvin Cycle), which occur in the stroma and use ATP and NADPH to convert CO2 into glucose.

Question 7: List three practical safety precautions to consider when studying Photosynthesis reactions in a laboratory setting.

Answer: Wear safety goggles, handle chemicals like iodine and acids carefully, and work in a well-ventilated area when using equipment that produces gases.

Question 8: Analyzing data: A student measures oxygen release in a pondweed experiment under different light intensities. The data shows oxygen levels increase with light intensity up to a point, then plateau. What does this suggest about the Photosynthesis process?

Answer: It suggests that Photosynthesis rate increases with light intensity until it reaches a maximum (saturation point), after which additional light does not increase the rate due to other limiting factors.

Question 9: In the context of Photosynthesis, explain how industrial applications utilize this reaction for biofuel production.

Answer: Industries cultivate algae or plants with high photosynthetic efficiency to produce biomass, which can be processed into biofuels like ethanol or biodiesel. This process harnesses Photosynthesis to convert sunlight into chemical energy stored in fuels, providing renewable energy sources.