Lesson1: Electron Carriers

Gen Bio Sir Pamo Cutie

Electron

One of the three basic subatomic particles – along with protons and neutrons – that makes up atoms

Electron

It is negatively charged

decrease

The removal of electron from a molecule results in a _______ in potential energy in an oxidized compound.

Reducing agent

A compound that reduces another

Oxidation

loses electrons and hydrogen and gains oxygen

Reduction

gains electrons and hydrogen and loses oxygen

Electron carriers

Molecules that play a crucial role in the transfer of electrons during cellular respiration and photosynthesis.

intermediaries

Electron carriers act as ___________, shuttling electron between different metabolic pathways, facilitating energy production.

NAD+, FAD, Coenzyme Q, Cytochromes, Iron-Sulfur Proteins

State the types of Electron Carriers

Nicotinamide Adenine Dinucleotide+

Consists of two nucleotides, adenine, and nicotinamide.

Nicotinamide Adenine Dinucleotide+

Accepts electrons and hydrogen ions, becoming reduced to NADH, which carries the electrons to the electron transport chain.

Flavin Adenine Dinucleotide

Contains a flavin molecule, adenine, and ribose.

Flavin Adenine Dinucleotide

Accepts electrons and hydrogen ions, becoming reduced to FADH2, which transfers the electrons to the electron transport chain.

Conenzyme Q

A lipid-soluble molecule with a long hydrophobic tail and a quinone head.

Coenzyme Q

Accepts electrons from NADH and FADH2, shuttling them to the electron transport chain.

Cytochromes

Proteins containing a heme group with an iron atom.

Cytochromes

Accept and donate electrons, facilitating the transfer of electrons along the electron transport chain.

Iron-Sulfur Proteins

Proteins containing iron-sulfur clusters.

Iron-Sulfur Proteins

Accept and donate electrons, participating in electron transfer reactions within the electron transport chain.

Electron Transport Chain

A series of electron carrier molecules embedded in the inner mitochondrial membrane.