Photosynthesis

What is a pigment?

• A molecule that absorbs specific wavelengths of light, giving it a particular color; chlorophyll is an example of a pigment.

• A type of plant that grows in water and has colorful flowers.

• A chemical compound that is used to enhance the flavor of food.

• A type of animal that changes color based on its environment.

What is the Calvin cycle?

• A process that converts sunlight into energy during photosynthesis.

• The light-independent reaction of photosynthesis where ATP and NADPH are used to convert carbon dioxide into glucose.

• A method of cellular respiration that occurs in the mitochondria.

• The stage of photosynthesis where oxygen is produced from water.

True or False: Plants perform both photosynthesis and cellular respiration.

• True

• False

• Only during the day

• Only at night

What is photosynthesis?

• The process by which plants absorb water from the soil.

• The process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose.

• The method by which animals convert food into energy.

• The way in which plants reproduce using seeds.

What is the equation for photosynthesis?

• 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂

• 6O₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6CO₂

• C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + light energy

• 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ + light energy

How do light-dependent and light-independent reactions work together?

• The light-dependent reactions capture energy from sunlight, which is then used in the light-independent reactions to convert carbon dioxide into glucose.

• Light-independent reactions occur in the absence of light and do not require energy.

• Light-dependent reactions produce glucose directly from sunlight without the need for carbon dioxide.

• Light-independent reactions capture energy from sunlight to produce ATP.

What is the role of water in photosynthesis?

• Water is a byproduct of photosynthesis.

• Water provides electrons and protons and is split during the light-dependent reactions to release oxygen.

• Water is used to absorb sunlight during photosynthesis.

• Water helps in the formation of glucose from carbon dioxide.

What happens during the light-dependent reactions?

• Light energy is captured and converted into chemical energy in the form of ATP and NADPH.

• Oxygen is produced as a byproduct of glucose breakdown.

• Carbon dioxide is fixed into organic molecules.

• Water is split to release electrons for the Calvin cycle.

What are the main products of photosynthesis?

• Carbon dioxide and water

• Glucose and oxygen

• Glucose and carbon dioxide

• Oxygen and nitrogen

What are the two main stages of photosynthesis?

• Light-dependent reactions and light-independent reactions (Calvin cycle)

• Photosystem I and Photosystem II

• Respiration and Fermentation

• Oxidation and Reduction