Photosynthesis Quiz: Concepts and Processes

Where does the Calvin Cycle, responsible for carbohydrate synthesis, take place within the chloroplast?

• Thylakoid membrane

• Stroma

• Outer membrane

• Intermembrane space

Which enzyme catalyzes the reaction between carbon dioxide and ribulose bisphosphate (RuBP) in the Calvin Cycle?

• ATP synthase

• Rubisco

• NADP+ reductase

• Cytochrome b6f

Tags

NGSS.HS-LS2-5

What are the main products of the light-dependent reactions of photosynthesis?

• Glucose and oxygen

• G3P and water

Which photosystem is responsible for the initial absorption of light and splitting of water molecules?

• Photosystem I

• Photosystem II

• Calvin Cycle

• Electron transport chain

What is the primary 3-carbon sugar produced during the carbon fixation phase of the Calvin Cycle?

• Glucose

• Glyceraldehyde-3-phosphate (G3P)

• Ribulose bisphosphate (RuBP)

• Pyruvate

Which molecule does Rubisco react with during the Calvin Cycle?

• NADPH

Tags

NGSS.HS-LS2-5

What is the correct sequence of electron flow in the light-dependent reactions of photosynthesis?

• Calvin Cycle → Photosystem II → ATP synthase

Which of the following best describes the function of Photosystem I in photosynthesis?

• Splits water molecules to release oxygen

• Synthesizes ATP from ADP and Pi

• Fixes carbon dioxide into organic molecules

How does the electron transport chain contribute to ATP synthesis during the light-dependent reactions?

• By directly producing ATP from glucose

• By creating a proton gradient across the thylakoid membrane

• By fixing carbon dioxide

• By splitting water molecules

Tags

NGSS.HS-LS1-5

What role does NADPH play in the Calvin Cycle?

• It acts as an enzyme

• It provides reducing power for carbon fixation

• It absorbs light energy

• It splits water molecules