The stages of aerobic respiration are very important. There are a total of 4 stages of this aerobic respiration. Every living being will go through these stages.
Aerobic respiration itself occurs in the respiratory organs of living things so that it plays a very important role. Without doing breathing or respiration, living things will not be able to survive much longer.
This respiration or breathing has the main purpose for living things to obtain energy intake. Actually this respiration process is divided into two types, namely aerobic and also anaerobic.
This time we will review more deeply about the stages of aerobic respiration that must be known.
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Get to know the 4 Stages of Aerobic Respiration
Respiration is the process of moving oxygen from inside the cells from the outside air to the tissues. Then, respiration is also the transport of carbon dioxide in the opposite direction.
One type of respiration in living things is aerobic. Aerobic respiration contains a lot of oxygen. You need to know, the oxygen comes from aerobic reactions so that it produces more energy too.
With oxygen, this respiration will separate glucose compounds. The oxygen plays a role in capturing electrons which will react with hydrogen ions and produce water or H2O compounds.
This one respiration event occurs in several stages. Here are some explanations:
Glycolysis Stages
The first stage of this respiration is glycolysis. The process of breaking down glucose will occur at this stage of glycolysis.
Glucose in the form of 6 carbon atoms will become pyruvic acid (3 carbon atoms). This stage of glycolysis occurs in the part called the cytoplasm in two types of reactions, namely Endergonic and Exergonic.
Endergonic reactions use ATP, while exergonic reactions produce ATP. In this stage of aerobic respiration, it will produce 2 NADH, 2 ATP, and also 2 pyruvic acid.
The pyruvic acid will then be very useful as a process material that occurs next in aerobic respiration.
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Oxidative Decarboxylation
The second step after glycolysis is oxidative decarboxylation. This is a stage before proceeding to the next respiration process.
Oxidative decarboxylation takes place in the mitochondria, precisely in the mitochondrial matrix. This event will convert 1 pyruvic acid into 1 acetyl co-A.
At the glycolysis stage, the number of glucose compounds will produce 2 pyruvic acids which cause the formation of 2 acetyl co-A. Then, Oxidative Decarboxylation also saw coenzyme-A which would also produce 2 NADH from NAD+.
Two molecules of acetyl co-A will go to the next stage of aerobic respiration. This reaction occurs twice for every 1 molecule of glucose.
Siklus Krebs
This next stage is also often referred to as citric acid leaf because it produces the initial compound in the form of citric acid. The place for the stages of the Krebs Cycle to take place is in the mitochondria.
This Krebs cycle will produce compounds, which have the function of providing the carbon framework of other compounds for synthesis. Such compounds as 3 NADH, 1 FADH2, and also 1 ATP in each pyruvic acid.
The NADH and FADH2 compounds at this stage of aerobic respiration will then be oxidized in the electron transfer system in order to produce ATP. Furthermore, the oxidation of 1 NADH produces 3 ATIP, then the oxidation of 1 FADH2 produces 2 ATP.
The formation of ATP in the Krebs Cycle is different from arena glycolysis, through the oxidative phosphorylation reaction the process occurs.
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Electron Transfer System
The final stage of aerobic respiration is the Electron Transfer System. This is the stage where NADH and FADH2 are converted into energy in the form of ATP so that it can be used by the body.
This Electron Transfer System occurs in the mitochondria, precisely around the inner mitochondrial membrane (crista). Every one NADH molecule can produce 3 ATP.
After that, every one molecule of FADH2 can produce 2 ATP. If the previous process has obtained 10 NADH, then the total ATP after the last stage is 30 units.
On the other hand, the amount of FADH2 previously obtained from the Krebs Cycle process was 2 FADHs. That way, the total amount of ATP that will be obtained from FADH2 is 4 ATP.
Of all the stages of aerobic respiration, a total of 38 ATP will be obtained. However, the Glycolysis stage will require 2 energy to move the cytoplasm to electron transport, so the net total is 36 ATP. (R10/HR-Online)
This post was last modified on Februari 18, 2023 5:36 AM
