Talk:Respiration (physiology)

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Theoretically this page could dichotomize by species (humans, fish, etc...), but I think most of this info is already just for humans so i will leave it.

I have added "breathing" in parantheses to the opening paragraph. As a layman, this does seem to be what we would say in the vernacular. Please revert this change if I have completely misunderstood this topic. -- dpol 07:00, 13 Apr 2004 (UTC)

Contents 1 Good work! 2 Removing the merge, please 3 Total rewrite - definition of respiration 4 Reaction of respiration 5 Merge from External respiration

[edit] Good work!

I really love this page and it's linked pages. And I look forward to the norwegian translations. --Ekko 08:35, 20 Feb 2005 (UTC)

[edit] Removing the merge, please

What do you think, everyone? How about making the respiration page about Aerobic and Anaerobic Respiration, (about internal, or cellular respiration) and removing the whole merge thing. --eshcorp

I agree. Respiration is by no means the same as respiration, so please remove merge.

Ditto and removing merge. Cburnett 05:04, 21 May 2006 (UTC)

Signalling agreement with this decision. User:Ceyockey (talk to me) 14:08, 21 May 2006 (UTC)

[edit] Total rewrite - definition of respiration

The name of this page is Respiration (physiology), but the existing page is not a physiological definition, it's a biochemical definition. Nearly all the content is already presented at cellular respiration. I have rewritten the bulk of the article to properly reflect the term's use in animal/human physiology. I removed a good deal of content, and have moved it here:

Robotsintrouble 04:29, 26 February 2007 (UTC)

Respiration is the process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and ATP (energy). Respiration takes place on a cellular level where as breathing is on a different level. Respiration takes place in the mitochondrial membrane complex of eukaryotes and on the cell membrane of prokaryotes and provides the cells with energy. Respiration also takes place in plants, where during the night they respire the products of photosynthesis - oxygen and glucose - to give energy, water and carbon dioxide.

[edit] Reaction of respiration

Aerobic respiration

Aerobic respiration requires oxygen in order to generate energy. It is the preferred method of pyruvate breakdown from glycolysis and requires that pyruvate enter the mitochondrion to be fully oxidized by the Krebs cycle. The product of this process is energy in the form of adenosine triphosphate (ATP), by substrate-level phosphorylation, reduced nicotinamide adenine dinucleotide (NADH) and reduced flavin adenine dinucleotide (FADH₂).

The chemical equation for glucose is: Ŗ C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy released (2830 kJ mol⁻¹)

Anaerobic respiration

Anaerobic respiration (also known as fermentation) refers to the oxidation of molecules in the absence of oxygen to produce energy. These processes require another electron acceptor to replace oxygen. Anaerobic respiration is often used interchangeably with fermentation, especially when the glycolytic pathway exists in the cell. However, certain anaerobic prokaryotes generate all of their ATP using an electron transport system and ATP synthase.

The chemical equation is:

C₆H₁₂O₆ → C₂H₅OH + Energy released (120 kJ mol⁻¹)

Anaerobic respiration releases much less energy than aerobic respiration because the alcohol released through anaerobic respiration still contains a great deal of energy.

[edit] Merge from External respiration

I suggested this merge, as it appears that the content of the above page merely covers the stage of pulmonary gas exchange and does not yet have enough breadth to merit its own article. Your views are appreciated. Robin S 01:02, 16 June 2007 (UTC)