Exploring Photosynthesis Concepts

This lecture provides an overview of photosynthesis, focusing on the role of pigments like chlorophyll in capturing sunlight, the function of electron carriers such as NADPH, and the conversion of water and carbon dioxide into glucose and oxygen. It explains the structure of chloroplasts and the processes of light-dependent and light-independent reactions, highlighting how these reactions work together to produce energy-rich sugars.

What is the primary role of pigments in photosynthesis?

• To produce oxygen

• To reflect sunlight

• To absorb water

• To capture sunlight

Which pigment is primarily responsible for the green color of plants?

• Xanthophyll

• Chlorophyll

• Anthocyanin

• Carotene

What are the three main parts of a chloroplast?

• Thylakoid, Grana, Stroma

• Nucleus, Cytoplasm, Membrane

• Mitochondria, Ribosome, Lysosome

• Cell wall, Vacuole, Chlorophyll

What is the function of NADPH in photosynthesis?

• To carry electrons

• To produce oxygen

• To store water

• To absorb sunlight

How does NADPH become NADP+?

• By absorbing sunlight

• By losing electrons

• By gaining electrons

• By releasing oxygen

What are the low-energy reactants in photosynthesis?

• Chlorophyll and Sunlight

• Water and Carbon Dioxide

• Glucose and Oxygen

• ATP and NADPH

What is produced when plants convert low-energy reactants using sunlight?

• Glucose and Oxygen

• Water and Carbon Dioxide

• ATP and NADPH

• Chlorophyll and Sunlight

Where do light-dependent reactions occur?

• In the stroma

• In the nucleus

• In the thylakoid

• In the cytoplasm

What is the main product of light-independent reactions?

• Oxygen

• Water

• Chlorophyll

• Glucose

What is the role of ATP in photosynthesis?

• To provide energy for reactions

• To produce oxygen

• To capture sunlight

• To carry electrons