Clarification with Glycolysis being apart of Anaerobic Respiration

[Irving4Prez]

From my understanding, Anaerobic Respiration can occur in the absence of oxygen. From what I've been taught, glycolysis doesn't require oxygen to occur, yet the Nature of Biology - Book 2 states that, "Aerobic respiration can be divided into three stages: glycolysis, Krebs cycle and electron transport". So which type of respiration does glycolysis actually belong to?

[Dayman]

Anaerobic respiration uses glycolysis to split glucose into two pyruvates i believe, then these two pyruvates then go through other processes to be further split into smaller compounds this is fermentation

Aerobic respiration uses glycolysis to split the glucose into two pyruvates then again in the presence of oxygen they go through the krebs cycle broken down into protons and CO2 and then proton carriers carry the proton into electron transport and produce more atp and then converts the proton into H2O using the oxygen...

to be honest i did bio last year and my memory is sketchy so i probs bullshitted the whole thiings so watc these vids for a better explanation... http://www.youtube.com/watch?v=gTv9y5dol-A&playnext=1&list=PLE09AF9E28BEB50F9&feature=results_main

[Dayman]

From my understanding, Anaerobic Respiration can occur in the absence of oxygen. From what I've been taught, glycolysis doesn't require oxygen to occur, yet the Nature of Biology - Book 2 states that, "Aerobic respiration can be divided into three stages: glycolysis, Krebs cycle and electron transport". So which type of respiration does glycolysis actually belong to?

Oh and  both use it.

[Yacoubb]

From my understanding, Anaerobic Respiration can occur in the absence of oxygen. From what I've been taught, glycolysis doesn't require oxygen to occur, yet the Nature of Biology - Book 2 states that, "Aerobic respiration can be divided into three stages: glycolysis, Krebs cycle and electron transport". So which type of respiration does glycolysis actually belong to?

Glycolysis is common to both aerobic and anaerobic cellular respiration. No oxygen is required when glucose is coverted to two 3-C compounds pyruvate molecules. What then happens is 2 ATP molecules are produced. In the absence of oxygen, enzymes in muscle tissue convert the pyruvate to lactic acid in animal cells and some bacteria, or pyruvate is converted to ethanol (alcohol) + carbon dioxide in plant and other bacterial cells, in what is called fermentation.

In the presence of oxygen, the pyruvate travels from the cytosol of the cell to the mitochondrial matrix where Kreb's Citric Acid Cycle, then the cristae of the mitochondria where Electron Transport Chain occurs (i.e. Aerobic Cellular Respiration).

[Irving4Prez]

Glycolysis is common to both aerobic and anaerobic cellular respiration. No oxygen is required when glucose is coverted to two 3-C compounds pyruvate molecules. What then happens is 2 ATP molecules are produced. In the absence of oxygen, enzymes in muscle tissue convert the pyruvate to lactic acid in animal cells and some bacteria, or pyruvate is converted to ethanol (alcohol) + carbon dioxide in plant and other bacterial cells, in what is called fermentation.

In the presence of oxygen, the pyruvate travels from the cytosol of the cell to the mitochondrial matrix where Kreb's Citric Acid Cycle, then the cristae of the mitochondria where Electron Transport Chain occurs (i.e. Aerobic Cellular Respiration).

Oh, so alcoholic and lactic acid fermentation are considered to anaerobic respiration as they aren't utilising oxygen? Thanks

[Yacoubb]

Oh, so alcoholic and lactic acid fermentation are considered to anaerobic respiration as they aren't utilising oxygen? Thanks

Yeah well fermentation can be divided into two forms:
(a) Lactic Acid Fermentation
(b) Ethanol (alcoholic) Fermentation

Fermentation in anaerobic respiration in yeast/plant and some bacterial cells. Anaerobic respiration is the catabolic conversion and breakdown of glucose to ATP without the oxidation reaction (i.e. in the absence of oxygen).

Hope its been clarified!

[Stick]

I don't think we use the term "fermentation" for animal cells. It's probably better to refer to it as anaerobic respiration.

[Yacoubb]

I don't think we use the term "fermentation" for animal cells. It's probably better to refer to it as anaerobic respiration.

You're right - just for the sake of explaining it, I said that. Should have clarified that I mean fermentation is simply anaerobic respiration in yeast and plant cells.

[Scooby]

I don't think we use the term "fermentation" for animal cells. It's probably better to refer to it as anaerobic respiration.

Yeah, that's true. In VCE Bio, just stick with using anaerobic respiration to describe the processes that occur when we don't have sufficient amounts of oxygen available for aerobic respiration

In reality though, anaerobic respiration doesn't occur in humans. Anaerobic respiration involves all the stages that also occur in aerobic respiration, with only difference being that the final electron acceptor isn't oxygen (instead it's something like sulfate).

The process that occurs in human cells in the absence of oxygen is fermentation. We (and some species of bacteria) undergo lactic acid fermentation (which funnily enough produces lactic acid), whereas plants, fungi and other species of bacteria under alcoholic fermentation (which produces ethanol and carbon dioxide)

Fermentation is an anaerobic process, but it's not anaerobic respiration

Yup 

[Yacoubb]

Yeah, that's true. In VCE Bio, just stick with using anaerobic respiration to describe the processes that occur when we don't have sufficient amounts of oxygen available for aerobic respiration

In reality though, anaerobic respiration doesn't occur in humans. Anaerobic respiration involves all the stages that also occur in aerobic respiration, with only difference being that the final electron acceptor isn't oxygen (instead it's something like sulfate).

The process that occurs in human cells in the absence of oxygen is fermentation. We (and some species of bacteria) undergo lactic acid fermentation (which funnily enough produces lactic acid), whereas plants, fungi and other species of bacteria under alcoholic fermentation (which produces ethanol and carbon dioxide)

Fermentation is an anaerobic process, but it's not anaerobic respiration

Yup 

Thanks for the clarification!