Photosynthesis

What is photosynthesis the conversion of?

• Chemical energy into light energy

• Light energy into chemical energy

• Oxygen into carbon dioxide

• Water into sugar

What do plants use to turn CO2 and H2O into sugar?

• The energy from soil

• The energy from water

• The energy from sunlight

• The energy from oxygen

What term describes organisms that produce their own food using light energy?

• Heterotrophs

• Chemotrophs

• Photoautotrophs

• Saprotrophs

Which of the following best describes heterotrophs?

• Organisms that produce their own food

• Organisms that consume other organisms

• Organisms that use chemical energy to make food

• Organisms that use light energy to make food

Which theory suggests that chloroplasts originated from cyanobacteria?

• Evolutionary theory

• Germ theory

• Endosymbiotic theory

• Gaia theory

Where are chloroplasts found in the leaves?

• Epidermis

• Mesophyll

• Stomata

• Xylem

What is the function of stomata?

• Transport water

• Conduct photosynthesis

• Exchange gases (CO₂ & O₂)

• Store nutrients

What is the stroma in a chloroplast?

• The double membrane that surrounds chloroplasts

• The green pigment within thylakoids

• The aqueous fluid where the Calvin cycle occurs

• The membrane sacks where light reactions occur

What is the correct association between the structure and function of thylakoids?

• Aqueous fluid where the Calvin cycle occurs

• Green pigment within thylakoids

• Membrane sacks that are the site of light reactions

• Double membrane that surrounds chloroplasts

What is the simplified photosynthesis equation?

• 6 CO₂ + 6 H₂O + sunlight → C₆H₁₂O₆ + 6 O₂

• 6 CO₂ + 12 H₂O + sunlight → 6 C₆H₁₂O₆ + 6 H₂O + 6 O₂

• 6 CO₂ + 12 H₂O + sunlight → C₆H₁₂O₆ + 12 H₂O + 6 O₂

• C₆H₁₂O₆ + 6 O₂ + sunlight → 6 CO₂ + 6 H₂O