/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q20P Predict the effect of an uncoupl... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 19: Q20P (page 662)

Predict the effect of an uncoupler such as dinitrophenol (Fig. 18-29) on the production of NADPH in a chloroplast.

Short Answer

Expert verified

The production of NADPH will increase in the presence of an uncoupler such as dinitrophenol.

Step by step solution

01

Dinitrophenol as an uncoupler

2,4 dinitrophenol is an uncoupler, that disconnects oxidative phosphorylation from the electron transport. It is achieved by discharging the electrochemical gradient which is generated by the electron transport.

02

Effect of dinitrophenol on NADPH production

In the light reactions of photosynthesis, the series of electron transport reactions terminate with the reduction reaction of NADP+鈫�NADPH. This generates a transmembrane protein gradient which is used to produce ATP.

Hence, the presence of uncoupler like dinitrophenol would result in an increase in the production of NADPH, as the conversion of NADP+鈫�NADPH inclines to create a transmembrane proton gradient required for ATP synthesis.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Chlorophyll f, which occurs in some species of cyanobacteria that grow under low illumination, has an absorption maximum of 706 nm, whereas other types of chlorophylls show absorption maxima at shorter wavelengths. Why is it advantageous for the cyanobacteria to produce chlorophyll f?

Summarize the events of the light reactions and light-independent reactions.

How many moles of ATP could theoretically be synthesized under standard conditions using the energy of the photons in Problem 5?

Estimate the change in free energy whenundergoes photooxidation.

Chloroplasts are illuminated until the levels of the Calvin cycle intermediates reach a steady state. The light is then turned off. How does the level of RuBP vary after this point?
See all solutions

Recommended explanations on Biology Textbooks

Communicable Diseases

Read Explanation

Astrobiological Science

Read Explanation

Organ Systems

Read Explanation

Heredity

Read Explanation

Cells

Read Explanation

Ecological Levels

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.