Photosynthesis

What is reduced by Photosystem I?

• ADP

• NADP

• NAD

• FAD

What is used to reduce NADP in the light-dependent reactions of photosynthesis?

• Conversion of ATP into ADP+Pi

• Electrons from Photosystem I

• Protons from the thylakoid space

• Oxygen released by photolysis of water

Which process occurs during the light-dependent reaction of photosynthesis?

• ATP, CO2 and H2O are produced.

• CO2 is used to produce carbohydrates.

• ATP and O2 are produced.

• RuBP is phosphorylated.

The diagram shows a section through a thylakoid. Electrons move from X to Y. What do the letters X, Y and Z represent?

• X: Photosystem I

  Y: Photosystem II

  Z: Thylakoid space

• X: Photosystem II

  Y: Photosystem I

  Z: Thylakoid space

• X: ATP synthase

  Y: Photosystem II

  Z: Stroma

• X: Photosystem II

  Y: ATP synthase

  Z: Stroma

Which space has the highest H+ concentration in a chloroplast?

• Thylakoid space

• Stroma

• Space between inner and outer membrane

• Matrix

Which process is common to photosynthesis and cell respiration?

• Photolysis

• The Calvin cycle

• The Krebs cycle

• Chemiosmosis