Photosynthesis Quiz

What is the primary function of the light-dependent reactions in photosynthesis?

• Convert chemical energy into light energy

• Release carbon dioxide as a waste product

• Convert light energy into chemical energy

• Produce oxygen as a byproduct

Which molecule is responsible for capturing light energy in the photosynthetic pigments?

• Insulin

• Chlorophyll

• Hemoglobin

• Melanin

How does temperature affect the rate of photosynthesis?

• Temperature affects the rate of photosynthesis by influencing the activity of enzymes involved in the process.

• Temperature affects the rate of photosynthesis by altering the amount of water available to the plant

• Temperature affects the rate of photosynthesis by increasing the size of the plant's roots

• Temperature affects the rate of photosynthesis by changing the color of the leaves

What role do chlorophyll and carotenoids play in photosynthesis?

• Convert light energy into heat

• Reflect light energy

• Store light energy for later use

• Absorb light energy

What are the factors that can limit the rate of photosynthesis?

• Light intensity, carbon dioxide concentration, and temperature

• Water concentration, oxygen level, and soil pH

Explain the process of photolysis in the light-dependent reactions.

• Light energy is used to split water molecules into oxygen, protons, and electrons.

• Light energy is used to combine water molecules into oxygen, protons, and electrons.

• Photolysis is the process of converting carbon dioxide into glucose using light energy.

• Photolysis is the process of converting oxygen into water using light energy.

Name the main photosynthetic pigments found in plants.

• carotene and xanthophyll

• chlorophyll a and chlorophyll b

• hemoglobin and myoglobin

• melanin and keratin

How does the intensity of light affect the rate of photosynthesis?

• It decreases the rate of photosynthesis.

• It increases the rate of photosynthesis.

• It has no effect on the rate of photosynthesis.

• It causes the rate of photosynthesis to fluctuate.

What is the significance of the electron transport chain in the light-dependent reactions?

• It helps to release oxygen into the atmosphere

• It helps to generate ATP and NADPH for the Calvin cycle

• It regulates the opening and closing of stomata

• It converts carbon dioxide into glucose

How do photosynthetic pigments absorb and reflect different wavelengths of light?

• By capturing photons of light energy and reflecting certain wavelengths based on their chemical composition.

• By emitting light and absorbing certain wavelengths based on their chemical composition.

• By converting light energy into heat and reflecting certain wavelengths based on their chemical composition.

• By absorbing sound waves and reflecting certain wavelengths based on their chemical composition.