AP Bio Photosynthesis

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?

• CO₂ and glucose
• ATP and NADPH
• ADP, P and NADP+
• NAD⁺ & ATP

Where does the Calvin cycle take place?

• Stroma
• thylakoid
• inner membrane

• matrix

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 1

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

What is the primary function of the Calvin cycle?

• regenerate ATP for use in the light reactions of photosynthesis
• produce carbon dioxide for use in the light reactions of photosynthesis
• produce oxygen by oxidizing water
• produce simple sugars from carbon dioxide

The H+ concentration gradient is formed to

• make NADPH

• split a water molecule

• generate ATP

• form water

Rubisco is important in which step of photosynthesis

• energizing the electrons in chlorophyll

• carbon fixation when CO2 is connected to RUBP during calvin cycle

• regeneration phase as RUBP is made during calvin cycle

• reduction of the carbon chain during the calvin cycle

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

• NADPH

• ATP

• Water

• Oxygen gas