Chapter 8.3 photosynthesis Review

Why do chloroplasts contain so many membranes?

• To increase the surface area for DNA replication

• To capture light energy in the form of high-energy electrons

• To store more chlorophyll pigments

• To facilitate easier movement within the cell

What do the light-dependent reactions of photosynthesis use from sunlight?

• Carbon dioxide

• Water

• Energy

• Glucose

What are the end products of light-dependent reactions in photosynthesis?

• Glucose and oxygen

• ATP and NADPH

• ADP and NADP+

• Carbon dioxide and water

During the light-dependent reactions, what are ADP and NADP+ converted into?

• Glucose and oxygen

• ATP and NADPH

• Carbon dioxide and water

• ADP and NADP+

What do the light-dependent reactions of photosynthesis directly involve?

• Chlorophyll

• Sunlight

• Carbon dioxide

• Sugars

Where do the light-dependent reactions occur in chloroplasts?

• In the stroma

• In the mitochondria

• In the thylakoids

• In the cytoplasm

What are the main products of light-dependent reactions?

• ATP and NADPH

• Sugars and oxygen

• Carbon dioxide and water

• ATP and sugars

What do thylakoids contain that are known as photosystems?

• Clusters of mitochondria and proteins

• Clusters of chlorophyll and proteins

• Clusters of ribosomes and proteins

• Clusters of nucleic acids and proteins

What is the role of photosystems in the light-dependent reactions of photosynthesis?

• They absorb sunlight and generate low-energy electrons.

• They absorb carbon dioxide and generate oxygen.

• They absorb sunlight and generate high-energy electrons.

• They convert ATP into glucose.

Where are the electron carriers involved in the light-dependent reactions embedded?

• In the cytoplasm

• In the stroma

• In the thylakoid membrane

• In the chloroplast envelope