Understanding Photosynthesis

What is the primary function of photosynthesis?

• To absorb nutrients from the soil

• To release carbon dioxide

• To produce water and minerals

• To convert sunlight into chemical energy

Which organisms perform photosynthesis?

• Only algae

• All living organisms

• Only plants

• Plants, some bacteria, and algae

Where does the light-dependent reaction of photosynthesis occur?

• In the mitochondria

• In the ribosomes

• In the nucleus

• In the thylakoid membrane

What is the role of chlorophyll in photosynthesis?

• To produce glucose

• To capture light energy

• To absorb water

• To release oxygen

Why do plants appear green?

• They lack chlorophyll

• They absorb green light

• They produce green pigments

• They reflect green light

What are the main products of the light-dependent reactions?

• Chlorophyll and oxygen

• Glucose and oxygen

• ATP and NADPH

• Carbon dioxide and water

What is the waste product of the light-dependent reactions?

• ATP

• Carbon dioxide

• Glucose

• Oxygen

What is the function of NADPH in photosynthesis?

• To provide structural support

• To capture oxygen

• To act as an energy carrier

• To absorb more light

What molecule acts as the initial carbon acceptor in the Calvin cycle?

• NADPH

• ATP

• RuBP

• Glucose

What is the purpose of ATP in the Calvin cycle?

• To release glucose

• To absorb carbon dioxide

• To produce water

• To provide energy