ML 9.3: The Photosynthesis Process

Where does the Calvin Cycle take place?

• Thylakoid membrane

• Electron transport chain

• Stroma

• Chloroplast

What is the direct product of photosynthesis?

• Sucrose

• Amino acids

• Starch

• G3P

Which two molecules provide energy for enzymes to rearrange the G3P molecules to regenerate RuBP?

• ADP

• NADP+

• ATP

• NADPH

What are the outputs of the light-dependent reactions?

• NADPH

• NADP+

• ADP

• ATP

Where does the input of CO₂ occur in the Calvin Cycle?

• Chloroplast

• Electron transport chain

• Stroma

• Thylakoid membrane

What molecules from the light-dependent reactions provide the energy to fix carbon into high-energy molecules in the Calvin Cycle?

• ATP

• NADPH

• ADP

• NADP+

What enzyme combines the carbon from atmospheric carbon dioxide with the intermediate molecule RuBP (Ribulose Biphosphate) in the Calvin Cycle?

• RuBisCo

• Catalase

• ATP Synthase

• NADP+ Reductase

How many G3P molecules are required to create one glucose molecule?

• 1

• 2

• 3

• 4

The chlorophyll pigments absorb light (photons) in photosystems II and I. This energy splits water into oxygen, hydrogen ions, and electrons. As these electrons are passed along the transport chain, what actions result from the energy they transfer?

• Hydrogen is pumped into the thylakoid from the stroma, building up a concentration gradient

• ATP is regenerated by ATP synthase

• NADPH is regenerated by NADP+ reductase

• Glucose is broken down to provide energy