Bch 401G Exam 3

Front 1

Back 1

Proton gradient serves as an energy reservoir for the synthesis of ATP

Front 2

Oxidative phosphorylation

Back 2

the process by which NADH and QH2 are oxidized and ATP is formed

Front 3

Respiratory electron-transport chain (ETC)

Back 3

Series of enzyme complexes embedded in the inner mitochondrial membrane, which oxidize NADH and QH2. Oxidation energy is used to transport protons creating a proton gradient

Front 4

ATP synthase

Back 4

uses the proton gradient energy to produce ATP

Front 5

Chemiosmotic theory

Back 5

A proton concentration gradient serves as the energy reservoir for driving ATP formation

Front 6

Respiration by mitochondria

Back 6

Oxidation of substrates is coupled to the phosphorylation of ADP – don’t get oxidation when ADP is absent
Respiration (consumption of oxygen) proceeds only when ADP is present
The amount of O2 consumed depends upon the amount of ADP added

Front 7

Coupled nature of respiration in mitochondria

Back 7

(a) O2 consumed only with ADP, excess Pi - normal oxidative phosphorylation
(b) (+) Uncoupler DNP (O2 consumed without ADP) – oxidation reactions without conservation of energy into ATP

Front 8

Uncouplers

Back 8

stimulate the oxidation of substrates in the absence of ADP