Photosynthesis Mechanisms and Functions

The video tutorial covers the process of photosynthesis, starting with an overview of leaf structure and the photosynthesis equation. It explains the light and dark reactions, detailing the role of chloroplasts, thylakoids, and stroma. The tutorial highlights the importance of electron carriers like NADP+ and NADPH in energy transfer. It delves into the light reactions, focusing on photosystems and the electron transport chain, and concludes with ATP synthesis through chemiosmosis.

What is the primary function of Palisade cells in a leaf?

• To protect the leaf from pathogens

• To transport nutrients

• To store water

• To absorb sunlight for photosynthesis

Which of the following is a product of photosynthesis?

• Glucose

• Water

• Nitrogen

• Carbon dioxide

What is the main role of the light reactions in photosynthesis?

• To synthesize proteins

• To split water and release oxygen

• To absorb carbon dioxide

• To produce glucose

What is the function of NADP+ in the light reactions?

• To absorb sunlight

• To carry electrons

• To produce ATP

• To split water

Which photosystem is responsible for splitting water?

• Photosystem IV

• Photosystem II

• Photosystem I

• Photosystem III

What is the role of the electron transport chain in photosynthesis?

• To transport water

• To synthesize glucose

• To pass electrons and pump protons

• To absorb carbon dioxide

How does ATP synthase produce ATP?

• By using light energy

• By splitting glucose

• By absorbing oxygen

• By allowing protons to flow through it

What is chemiosmosis?

• The breakdown of ATP

• The synthesis of glucose

• The movement of hydrogen ions across a membrane

• The movement of water across a membrane

What creates the proton gradient used in ATP synthesis?

• The splitting of glucose

• The absorption of sunlight

• The release of oxygen

• The splitting of water and electron transport

Why is the inside of the thylakoid membrane more acidic than the outside?

• Due to the presence of ATP

• Because of the low concentration of oxygen

• Because of the high concentration of hydrogen ions

• Due to the high concentration of glucose