When electrons are transferred between molecules in a sequence of reactions as they pass through the ETC, an electrochemical gradient of protons (hydrogen ions) across the inner mitochondrial membrane is established. The pH inside the mitochondrial matrix is higher than in the intermembrane space.
Standard detail
3.5.B.5
Depth 3Parent ID: 5BC5523C84034FD197F5F134B880AB1CStandard set: AP Biology (2025)
Original statement
Quick facts
- Statement code
- 3.5.B.5
- List ID
- 5
- Standard ID
- 5E9DAB464F084C09A56D077D7D5474CC
- Subject
- AP Biology
- Grades
- 09, 10, 11, 12
- Ancestor IDs
- 5BC5523C84034FD197F5F134B880AB1C69D5AB53B370437EB0FB01C90E936C78E8EE8244CBC242BFB4FBCC87127919A7
- Source document
- AP® Biology COURSE AND EXAM DESCRIPTION Effective Fall 2025
- License
- CC BY 4.0 US