Photosynthesis 2

What is the first stage of photosynthesis called?

• Light reactions

• Calvin cycle

• Carbon fixation

• Electron transport chain

What is the ultimate source of carbon for nearly all life?

• Oxygen gas

• Water

• Glucose

• Carbon dioxide

What is the enzyme responsible for carbon dioxide fixation in C3 plants?

• RuBisCo

• ATP synthase

• NADPH dehydrogenase

• Cytochrome c oxidase

What is the carbon fixation pathway used by plants like corn?

• C3 pathway

• C4 pathway

• CAM pathway

• Krebs pathway

What is the name of the pathway for carbon fixation used by cacti and succulents?

• C3 pathway

• C4 pathway

• CAM pathway

• Glycolysis pathway

What is the main product of the Calvin cycle?

• Oxygen gas

• Water

• Glucose

• Carbon dioxide

Where does photosynthesis occur in plant cells?

• Nucleus

• Mitochondria

• Chloroplast

• Endoplasmic reticulum

What is the reduced form of the electron acceptor NADP+?

• NADPH

• ATP

• NADH

• ADP

Where do the protons used in the light reactions come from?

• Carbon dioxide

• Water

• Glucose

• Oxygen gas

Do photosynthesis and cellular respiration occur at the same time in a plant?

• Yes

• No

• Sometimes

• Depends on the plant species