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Chapter 8: Q. 27 (page 225)

What are the roles of ATP and NADPH in photosynthesis?

Short Answer

Expert verified

NADPH is employed as a reducing agent while ATP is used to supply energy for numerous endogenic reactions in the Calvin cycle or dark reactions.

Step by step solution

01

Introduction

Photosynthesis is the process by which green plants and some other creatures manufacture nutrients from carbon dioxide and water using sunshine.

The energy carriers are ATP (adenosine triphosphate) and Nicotinamide adenine dinucleotide phosphate hydrogen. ATP hydrolyzes to generate ADP, while NADPH oxidizes to NADP+, releasing energy and electrons for various metabolic processes, respectively.

02

Explanation

During light independent or dark processes during photosynthesis, ATP and NADPH are employed to supply energy and as a reducing agent for the fixation of carbon dioxide to glucose.

The conversion of 1, 3-biphophoglycerate to glyceraldehyde phosphate requires ATP. It's also employed in the conversion of ribulose-5-phosphate to ribulose 1, 5-biphosphate.

During the Calvin cycle's reduction phase, NADH is needed to convert 1, 3-biphosphoglycerate to glyceraldehyde-3-phosphate.

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Most popular questions from this chapter

Why are energy carriers thought of as either "full" or "empty"?

What is the primary difference between a circular pathway and a linear pathway?

Describe the pathway of electron transfer from photosystem II to photosystem I in light dependent reactions?

Imagine a sealed terrarium containing a plant and a beetle. How does each organism provide resources for the other? Could each organism survive if it was the only living thing in the terrarium? Why or why not?

Which statement correctly describes carbon fixation?

a. the conversion of CO2into an organic compound

b. the use of RuBisCO to form 3-PGA

c. the production of carbohydrate molecules from G3P

d. the formation of RuBP from G3P molecules

e. the use of ATP and NADPH to reduceCO2
See all solutions

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