Question

what is mean by respiration list out the event steps in respiration​

Answer 1

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Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules.

Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells)

It has four stages known as glycolysis, Link reaction, the Krebs cycle, and the electron transport chain. This produces ATP which supplies the energy that cells need to do work. When they don't get enough oxygen, the cells use anaerobic respiration, which doesn't require oxygen.

End products of respiration are carbon dioxide, water and energy in the form of ATP.

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Answer 2

Explanation:

Cellular respiration is one of the most elegant, majestic, and fascinating metabolic pathways on earth. At the same time, it’s also one of the most complicated. When I learned about it for the first time, I felt like I had tripped and fallen into a can of organic-chemistry-flavored alphabet soup!

Luckily, cellular respiration is not so scary once you get to know it. Let's start by looking at cellular respiration at a high level, walking through the four major stages and tracing how they connect up to one another.

step by step through the four stages of cellular respiration.

1. Glycolysis:- In glycolysis, glucose—a six-carbon sugar—undergoes a series of chemical transformations. In the end, it gets converted into two molecules of pyruvate, a three-carbon organic molecule. In these reactions, ATP is made, and \text{NAD}^+NAD + start text, N, A, D, end text, start superscript, plus, end superscript is converted to \text{NADH}NADHstart text, N, A, D, H, end text.

2.Pyruvate oxidation. Each pyruvate from glycolysis goes into the mitochondrial matrix—the innermost compartment of mitochondria. There, it’s converted into a two-carbon molecule bound to Coenzyme A, known as acetyl CoA. Carbon dioxide is released and \text{NADH}NADHstart text, N, A, D, H, end text is generated.

3. Citric acid cycle:- The acetyl CoA made in the last step combines with a four-carbon molecule and goes through a cycle of reactions, ultimately regenerating the four-carbon starting molecule. ATP, \text{NADH}NADHstart text, N, A, D, H, end text, and \text{FADH}_2FADH 2 start text, F, A, D, H, end text, start subscript, 2, end subscript are produced, and carbon dioxide is released.

4. Oxidative phosphorylation:- The \text{NADH}NADHstart text, N, A, D, H, end text and \text{FADH}_2FADH 2 start text, F, A, D, H, end text, start subscript, 2, end subscript made in other steps deposit their electrons in the electron transport chain, turning back into their "empty" forms (\text{NAD}^+NADH+ start text, N, A, D, end text, start superscript, plus, end superscript and \text{FAD}FADstart text, F, A, D, end text). As electrons move down the chain, energy is released and used to pump protons out of the matrix, forming a gradient. Protons flow back into the matrix through an enzyme called ATP synthase, making ATP. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water.

I hope this is help you..