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General Biology 1 Module 13: Light-Dependent Reactions Quiz

12 Questions

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General Biology 1 Module 13: Light-Dependent Reactions Quiz

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Questions and Answers

What is the primary function of the light-absorbing pigment molecules in plant leaves?

Absorbing excess heat from sunlight

Producing carbon dioxide

Converting chemical energy into light energy

Converting light energy into chemical energy (correct)

What is the initial form of energy that is converted to chemical energy during the light-dependent reactions?

Light energy (correct)

Potential energy

Kinetic energy

Heat energy

Which specific competency does this module aim to deliver?

Defining the role of mitochondria in cellular respiration

Understanding the role of chlorophyll in photosynthesis

Identifying the steps of the Calvin cycle

Describing the patterns of electron flow through light (correct)

In which part of the plant cell are chlorophyll and associated electron carriers held?

Thylakoid membranes Signup and view all the answers

How many forms of chlorophyll are there?

Two forms (a and b) Signup and view all the answers

What is the primary role of photosystems in the light-dependent reactions?

Transferring electrons and generating ATP and NADPH Signup and view all the answers

What is the role of light in the process of photosynthesis?

To make two molecules needed for the proceeding stage of photosynthesis Signup and view all the answers

What is the main function of photosystem II (PSII) in the light reactions of photosynthesis?

To absorb light and pass energy to the reaction center Signup and view all the answers

What is the special pair of chlorophyll molecules found at the core of photosystem II (PSII)?

P680 Signup and view all the answers

What is the process called when electrons are removed from water and passed through PSII and PSI before ending up in NADPH?

Non-cyclic photophosphorylation Signup and view all the answers

What is the primary role of ATP synthesis in the light reactions of photosynthesis?

To drive pumping of H+ ions from the stroma Signup and view all the answers

What happens when light is absorbed by pigments in photosystem II (PSII)?

Energy is transferred to P680, boosting an electron to a high energy level Signup and view all the answers