Friday Special 28/02/2025

1. Which of the following is the primary pigment responsible for capturing light energy in photosynthesis?

• A) Chlorophyll

• B) Carotenoids

• C) Xanthophyll

• D) Phycobilins

2. In photosynthesis, the light-dependent reactions occur in which part of the chloroplast?

• A) Stroma

• B) Thylakoid membrane

• C) Cytoplasm

• D) Nucleus

3. What is the main purpose of the Calvin cycle in photosynthesis?

• A) To convert light energy into chemical energy

• B) To produce oxygen

• C) To convert carbon dioxide into glucose

• D) To absorb light energy

4. Which of the following molecules is produced during the light-dependent reactions and used in the Calvin cycle?

• A) ATP and NADPH

• B) Oxygen and glucose

• C) Carbon dioxide and oxygen

• D) Water and glucose

5. What is the role of water molecules in photosynthesis?

• A) To act as a carbon source

• B) To donate electrons and produce oxygen

• C) To act as a catalyst in the Calvin cycle

• D) To provide energy for ATP production

6. The process of photosynthesis can be summarized by which of the following chemical equations?

• A) 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

• B) C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

• C) 6CO₂ + 6H₂O → C₆H₁₂O₆

• D) C₆H₁₂O₆ + 6O₂ → C₆H₁₂O₆ + 6O₂

7. Which gas is a byproduct of the light-dependent reactions in photosynthesis?

• A) Nitrogen

• B) Oxygen

• C) Carbon dioxide

• D) Methane