Photosynthesis Processes and Functions

The video explains photosynthesis, a process where plants use light to convert carbon dioxide and water into glucose and oxygen. It covers the photosynthesis formula, the role of pigments like chlorophyll, and the two main reactions: light dependent and light independent. The light dependent reaction occurs in thylakoids, producing ATP and NADPH, while the light independent reaction, or Calvin Cycle, occurs in the stroma, using ATP and NADPH to convert carbon dioxide into glucose. Photosynthesis is crucial for oxygen production and energy supply in ecosystems.

Which organisms are capable of performing photosynthesis?

• Only animals

• Plants, some protists, and some bacteria

• Only plants

• All living organisms

What is the main product of photosynthesis that is essential for cellular respiration?

• Water

• Carbon dioxide

• Oxygen

• Glucose

What is the role of pigments in photosynthesis?

• To absorb water

• To store glucose

• To capture light

• To produce oxygen

Why do most plants appear green?

• They absorb green light

• They reflect green light

• They produce green pigments

• They lack other pigments

Where does the light-dependent reaction occur?

• In the mitochondria

• In the thylakoids

• In the stroma

• In the cytoplasm

What is produced during the light-dependent reaction?

• ATP and NADPH

• Chlorophyll and pigments

• Glucose and oxygen

• Carbon dioxide and water

What is another name for the light-independent reaction?

• Calvin Cycle

• Glycolysis

• Electron Transport Chain

• Krebs Cycle

Where does the light-independent reaction take place?

• In the mitochondria

• In the thylakoids

• In the nucleus

• In the stroma

What is the main purpose of the light-independent reaction?

• To split water molecules

• To capture light energy

• To fix carbon dioxide into glucose

• To produce oxygen

How do ATP and NADPH contribute to the light-independent reaction?

• They provide light energy

• They release oxygen

• They absorb carbon dioxide

• They supply energy and reducing power