Photosynthesis Quiz

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Questions and Answers

What is the main purpose of photosynthesis in plants?

The main purpose of photosynthesis in plants is to produce organic compounds, especially sugars, using light energy.

What are the two sets of reactions involved in photosynthesis?

The two sets of reactions involved in photosynthesis are the light-dependent reactions and the Calvin Cycle.

What are the structures inside plant cells that are responsible for photosynthesis?

The structures inside plant cells responsible for photosynthesis are special organelles called chloroplasts.

What are thylakoids and what is their role in photosynthesis?

Thylakoids are disks inside chloroplasts with pigments that absorb light energy. They act like solar panels in the chloroplast, absorbing light energy from the sun. Signup and view all the answers

Where are the pigments such as chlorophyll found in the chloroplast?

The pigments such as chlorophyll are found in the thylakoid membrane, where light is absorbed. They are arranged in clusters called photosystems. Signup and view all the answers

What happens when Photosystem II absorbs light?

Electrons in chlorophyll gain energy and leave chlorophyll to move to the electron transport chain. Water is split to replace the lost electrons, producing electrons, hydrogen ions, and oxygen. Signup and view all the answers

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

The electron transport chain transports electrons and uses their energy to pump hydrogen ions across the thylakoid membrane, creating a high concentration of hydrogen ions inside the thylakoid. Signup and view all the answers

How is ATP produced in the light-dependent reactions of photosynthesis?

ATP is produced as hydrogen ions passively diffuse through ATP synthase from high to low concentration, causing ATP synthase to spin and produce ATP. Signup and view all the answers

What is the function of NADPH in photosynthesis?

NADPH is an electron carrier that carries electrons and hydrogens to the next set of reactions in photosynthesis, specifically the Calvin Cycle. Signup and view all the answers