Photosynthesis and Plant Biochemistry Quiz

What is the primary source of carbon for plants?

• Soil

• Water

• Sunlight

• Carbon dioxide in the air

Where in the plant cell does photosynthesis primarily occur?

• Cell membrane

• Chloroplasts

• Mitochondria

• Nucleus

What is the role of chlorophyll in photosynthesis?

• Absorbs light energy

• Stores glucose

• Absorbs water

• Produces oxygen

Which molecule is known as the energy currency of the cell?

• Glucose

• Chlorophyll

• ATP

• NADPH

What is the main function of the thylakoid membranes?

• Transport water

• Generate energy from light

• Absorb carbon dioxide

• Store glucose

What is the first step in the Calvin cycle?

• Production of ATP

• Fixation of carbon dioxide

• Conversion of glucose to starch

• Release of oxygen

Which enzyme is crucial for carbon fixation in the Calvin cycle?

• Cytochrome bf

• Rubisco

• ATP synthase

• Photosystem II

What is the primary sugar produced during photosynthesis?

• Glucose

• Fructose

• Lactose

• Sucrose

How does photosynthesis impact atmospheric CO2 levels?

• Increases oxygen levels only

• Has no effect on CO2 levels

• Decreases CO2 levels

• Increases CO2 levels

What is a potential consequence of deforestation on photosynthesis?

• Increased oxygen production

• Decreased CO2 levels

• Reduced ability to remove CO2 from the atmosphere

• Increased plant growth