AP Biology Photosynthesis

What is the primary function of the light reactions of photosynthesis?

• To produce glucose
• To produce NADPH and ATP
• To use ATP
• To produce RuBP

What supplies the electrons that are lost in PS I?

• the electrons from PS II
• water
• glucose
• oxygen

What is the function of NADP+?

• It absorbs light
• It is an electron carrier
• It is a light-reflecting pigment
• It acts as long-term energy storage

Which of the following molecules is not needed for the Calvin Cycle?

• CO₂
• ATP
• NADPH
• H₂O

Green plants reflect ________ light.

• Red
• Green
• All
• Red and Violet

The light reactions occur in the ________ and the dark reactions take place in the ________.

• Chloroplast / thylakoid membrane
• stroma / thylakoid
• mesophyl / stomata
• thylakoid membrane / stroma

Where does the carbon come from that is used to form glucose?

• The soil
• CO₂ in the air
• From other carbohydrates
• Calvin Cycle

Where is glucose synthesized

• Photosystem II
• Photosystem I
• Calvin Cycle
• Glycolysis

Where does the Calvin cycle take place?

• stroma of the chloroplast
• thylakoid membrane
• outer membrane of the chloroplast
• interior of the thylakoid membrane

When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+
• splitting water molecules
• chemiosmosis
• electron transfer in photosystem II and I