Photosynthesis Quiz

What is the overall process by which sunlight, water, and carbon dioxide are converted into chemical energy stored in glucose?

• Fermentation

• Chemosynthesis

• Cellular respiration

• Photosynthesis

Answer explanation

Photosynthesis is the process by which sunlight, water, and carbon dioxide are converted into glucose, storing chemical energy. It is the correct choice.

What are grana?

• The waste product of photosynthesis

• Stacks of thylakoid membrane in the chloroplast

• The pigment in the thylakoid membrane

• The fluid part of the chloroplast

Answer explanation

Grana are stacks of thylakoid membrane in the chloroplast, where photosynthesis takes place.

Where does the light-dependent reaction occur in the chloroplast?

• Nucleus

• Grana

• Stroma

• Cell membrane

Answer explanation

The light-dependent reaction occurs in the grana of the chloroplast. It is where the photosystems and electron transport chain are located, allowing for the conversion of light energy into chemical energy.

What is the pigment in the thylakoid membrane of chloroplasts that allows plants to capture sunlight?

• Glucose

• Chlorophyll

• NADPH

• ATP

Answer explanation

Chlorophyll is the pigment in the thylakoid membrane of chloroplasts that enables plants to capture sunlight.

What is the process some bacteria producers use to make food from chemicals?

• Cellular respiration

• Fermentation

• Photosynthesis

• Chemosynthesis

Answer explanation

Some bacteria producers use chemosynthesis to make food from chemicals.

What is the ultimate source of energy for most life on Earth?

• Glucose

• Sun

• Carbon dioxide

• Water

Answer explanation

The ultimate source of energy for most life on Earth is the Sun.

What is the chemical formula for photosynthesis?

• 6O2 + 6H2O -> C6H12O6 + 6CO2

• 6CO2 + 6H2O -> C6H12O6 + 6O2

• C6H12O6 + 6O2 -> 6CO2 + 6H2O

• C6H12O6 + 6CO2 -> 6H2O + 6O2

Answer explanation

The chemical formula for photosynthesis is 6CO2 + 6H2O -> C6H12O6 + 6O2. This equation represents the process by which plants convert carbon dioxide and water into glucose and oxygen using sunlight.

What is released as a waste product during the light-dependent reaction?

• NADPH

• Oxygen

• ATP

• Glucose

Answer explanation

Oxygen is released as a waste product during the light-dependent reaction. It is produced when water molecules are split, and it is essential for aerobic respiration and life on Earth.

What moves on to the next stage after the light-dependent reaction?

• Water

• Oxygen

• Glucose

• ATP, NADPH, and H+

Answer explanation

After the light-dependent reaction, ATP, NADPH, and H+ move on to the next stage. They are the correct choices as they provide energy and reducing power for the light-independent reaction.

Where does the light-independent reaction (Calvin Cycle) occur in the chloroplast?

• Nucleus

• Stroma

• Grana

• Cell membrane

Answer explanation

The light-independent reaction (Calvin Cycle) occurs in the stroma of the chloroplast. It is where carbon dioxide is converted into glucose using energy from ATP and NADPH.