Join TSR now and get all your revision questions answeredSign up now

Biology question , respration Watch

    • Thread Starter

    i was wondering if anyone can explain how a proton gradient is linked to respiration. this question is from the mark scheme from the exam question below
    so basically the first marking point

    DNP inhibits respiration by preventing a proton gradient being maintained across membranes. When DNP was added to isolated mitochondria the following changes were observed
    • less ATP was produced
    • more heat was produced
    • the uptake of oxygen remained constant.
    Explain how DNP caused these changes.

    1. Less / no proton / H+ movement so less / no ATP produced;
    2. Heat released from electron transport / redox reactions / energy not used to produce ATP is released as heat;
    3. Oxygen used as final electron acceptor / combines with electrons (and protons);
    • Official TSR Representative

    Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.

    Just quoting in Danny Dorito so she can move the thread if needed :wizard:
    (Original post by Danny Dorito)
Is GoT overrated?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni


Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Sponsored content:



Find out how a Higher Education Achievement Report can help you prove your achievements.

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.