While every initiative has been made to follow citation format rules, there might be part discrepancies.Please describe the appropriate style manual or various other sources if friend have any questions.

You are watching: What is the correct sequence of events in cellular respiration

Corrections? Updates? Omissions? allow us understand if you have actually suggestions to boost this article (requires login).
Feedback share a type (Required)Factual CorrectionSpelling/Grammar repair CorrectionAdditional InformationOther

Our editors will review what you’ve submitted and determine whether to review the article.

Join yellowcomic.com"s Publishing companion Program and also our ar of professionals to obtain a an international audience for your work!

Read more on This Topic
algae: cellular respiration
Cellular respiration in algae, as in all organisms, is the procedure by i beg your pardon food molecules space metabolized to achieve chemical power for...

Main metabolic processes

Biologists differ rather with respect to the names, descriptions, and also the variety of stages of cellular respiration. The as whole process, however, have the right to be distilled into three key metabolic step or steps: glycolysis, the tricarboxylic mountain cycle (TCA cycle), and also oxidative phosphorylation (respiratory-chain phosphorylation).


Glycolysis (which is additionally known as the glycolytic pathway or the Embden-Meyerhof-Parnas pathway) is a sequence of 10 chemistry reactions occurring in many cells the breaks down a glucose molecule into two pyruvate (pyruvic acid) molecules. Power released throughout the malfunction of glucose and also other organic fuel molecules from carbohydrates, fats, and proteins during glycolysis is captured and stored in ATP. In addition, the compound nicotinamide adenine dinucleotide (NAD+) is convert to NADH throughout this action (see below). Pyruvate molecules developed during glycolysis then go into the mitochondria, where they are each converted right into a compound recognized as acetyl coenzyme A, which then enters the TCA cycle. (Some sources consider the conversion of pyruvate into acetyl coenzyme A together a distinctive step, dubbed pyruvate oxidation or the transition reaction, in the process of to move respiration.)


The generation that pyruvate v the process of glycolysis is the very first step in fermentation.
Encyclopædia yellowcomic.com, Inc.

Tricarboxylic mountain cycle

The TCA bicycle (which is likewise known together the Krebs, or citric acid, cycle) theatre a main role in the breakdown, or catabolism, of organic fuel molecules. The bicycle is comprised of eight actions catalyzed through eight different enzymes that develop energy at several different stages. Many of the energy derived from the TCA cycle, however, is captured by the compounds NAD+ and flavin adenine di nucleotide (FAD) and also converted later on to ATP. The assets of a single turn of the TCA bike consist of 3 NAD+ molecules, i m sorry are decreased (through the process of including hydrogen, H+) to the same variety of NADH molecules, and one FAD molecule, i m sorry is likewise reduced come a solitary FADH2 molecule. This molecules walk on come fuel the third stage of to move respiration, whereas carbon dioxide, which is additionally produced by the TCA cycle, is released as a waste product.

tricarboxylic acid cycle
The eight-step tricarboxylic mountain cycle.
Encyclopædia yellowcomic.com, Inc.

Oxidative phosphorylation

In the oxidative phosphorylation stage, every pair that hydrogen atoms removed from NADH and FADH2 gives a pair of electrons that—through the action of a collection of iron-containing hemoproteins, the cytochromes—eventually reduce one atom the oxygen to form water. In 1951 it was uncovered that the carry of one pair of electrons to oxygen outcomes in the formation of 3 molecules that ATP.

Oxidative phosphorylation is the significant mechanism whereby the huge amounts of energy in foodstuffs are conserved and made easily accessible to the cell. The collection of steps through which electrons circulation to oxygen permits a steady lowering that the power of the electrons. This component of the oxidative phosphorylation phase is sometimes referred to as the electron deliver chain. Part descriptions of moving respiration that emphasis on the prestige of the electron transfer chain have readjusted the name of the oxidative phosphorylation stage to the electron transport chain.

The series of steps through which electrons circulation to oxygen patent a steady lowering of the power of the electrons. This part of the oxidative phosphorylation phase is sometimes referred to as the electron deliver chain.

See more: Tyler James Williams And His Brothers, Tyler James Williams

The editors of Encyclopaedia yellowcomic.com This post was most recently revised and also updated by Kara Rogers, senior Editor.