AP Photosynthesis Light Dependent Reaction

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+

• H₂Oand O₂

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

Which of the following processes is most directly driven by light energy?

• carbon fixation in stroma

• reduction of NADP molecules

• ATP Synthesis

• removal of electrons from membrane-bound chlorophyll molecules

Tags

NGSS.HS-LS1-5

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

Tags

NGSS.HS-LS1-5

How does water split in the light dependent reaction?

• Into O2 that goes to the calvin cycle and the Hydrogens are released to the atmosphere

• Into 6O2 that is released into the atmosphere and the H+ get picked up by Atp. 

• Into 6O2 that is released into the atmosphere and the H+ gets picked up by NADP+ to carry to the light dependent cycle. 

• Into 6O2 that is released into the atmosphere and the H+ gets picked up by NADP+ to carry to the H+ to the Calvin cycle and to help create ATP. 

Tags

NGSS.HS-LS1-5

What supplies the electrons that are lost in PS I?

• the electrons from PS II

• water

• glucose

• oxygen

Tags

NGSS.HS-LS1-5

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

• Chloroplast / thylakoid membrane

• stroma / thylakoid

• mesophyl / stomata

• thylakoid membrane / stroma

Tags

NGSS.HS-LS1-5

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

Tags

NGSS.HS-LS1-5

ATP is made during the light reaction using all of the following EXCEPT

• proton pump

• hydrogen ion gradient

• electron energy from photosystem II

• NADPH donating electrons

Tags

NGSS.HS-LS1-5

_________________ are the products of the light-dependent reactions.

• chloroplast and light

• water and sugars

• ATP, NADPH and OXYGEN