Light Dependent Reaction- Pre-AP

Front

What supplies the electron that is lost in Photosystem II (PS II)?

Back

Water supplies the electron that is lost in PS II.

Front

What is the role of NADP+ in the light-dependent reactions?

Back

NADP+ acts as an electron carrier.

Front

What happens to electrons when light strikes chlorophyll molecules in photosystems I and II?

Back

Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.

Front

Which of the following is NOT a product of the light reactions: ATP, NADPH, or Glucose?

Back

Glucose is NOT a product of the light reactions.

Front

What are the two main products of the light reactions that are required for the Calvin cycle?

Back

The two products are NADPH and ATP.

Front

What is the primary function of the light-dependent reactions in photosynthesis?

Back

The primary function is to convert light energy into chemical energy in the form of ATP and NADPH.

Front

Where do the light-dependent reactions take place in the chloroplast?

Back

They take place in the thylakoid membranes.

Front

What is the significance of the electron transport chain in the light-dependent reactions?

Back

The electron transport chain helps to create a proton gradient that drives ATP synthesis.

Front

How is ATP generated during the light-dependent reactions?

Back

ATP is generated through photophosphorylation, driven by the proton gradient created by the electron transport chain.

Front

What role does chlorophyll play in photosynthesis?

Back

Chlorophyll absorbs light energy, which excites electrons and initiates the light-dependent reactions.