How do organisms generate ATP?

Plants - harness light energy into chemical energy of ATP (photosynthesis) Eukaryotes- extract high energy electrons from fuels (mostly sugars) to synthesise ATP. This process is called oxidative phosphorylation and occurs in three key steps: 1)electrons flow through the mitochondrial electron transport chain to reduce oxygen, resulting in formation of a water molecule 2) the electron flow results in pumping of protons across the inner mitochondrial membrane, from matrix to the intermembrane space, creating a proton motive force or gradient  3) protons flow black into the matrix through ATP synthase, resulting in synthesis of ATP (chemiosmosis) 

MP
Answered by Mihai P. Biology tutor

2939 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe how filtration of the blood occurs at the Kidney


When a new antigen is presented to the immune system, an immune response leads to antibodies are released. The second time this happens it is much faster - explain why


Describe how a wave of excitation, which originates in the sinoatrial node (SAN) of the heart, eventually results in ventricular systole.


What is a synapse and how is information passed through it?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences