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What is the breakdown of pyruvic acid in the presence of oxygen called?
The breakdown of pyruvic acid in the presence of oxygen is called aerobic respiration. At the beginning of aerobic respiration, acidic acid bonds to a molecule called coenzyme A to form Acetyl CoA.
The processes of glycolysis and the anaerobic pathways is called?
The processes of glycolysis and anaerobic pathways are collectively referred to as fermentation. This metabolic process helps cells generate energy in the absence of oxygen by breaking down glucose into smaller molecules.
Pyruvate is the end product of?
glycolysis. It is a 3-carbon compound that can be further metabolized in the presence of oxygen to enter the citric acid cycle or converted to lactate or ethanol in the absence of oxygen through fermentation.
Why citric acid cycle is oxygen dependent?
The citric acid cycle does not directly utilize oxygen, however it is still necessary in order for it to proceed. The reason for this is that in order for NADH to be reduced back into NAD+, oxygen must be present. If NAD+ is not regenerated, the cycle can't proceed, thus fermentation evolved. This is correct except for that NADH must be oxidized to NAD+, not reduced. Reduction of NAD+ results in NAHD + H+
What two molecules combine to produce citric acid in the citric acid cycle?
Acetyl-CoA and oxaloacetate combine to produce citric acid (or citrate) in the citric acid cycle. This is the first step in the cycle, also known as the condensation step.
Is the citric acid cycle aerobic or anaerobic?
The citric acid cycle, also known as the Krebs cycle, is an aerobic process that occurs in the mitochondria of cells. It requires oxygen to function efficiently and produce energy in the form of ATP.
What is the forms of cellular respiration?
There are anaerobic and aerobic types of cellular respiration. Anaerobic (including glycolysis) respiration does not involve oxygen. Aerobic (including the Kreb's, or citric acid, cycle and oxidative phosphorylation) respiration requires oxygen, and generates much more energy than anaerobic respiration.
What are the two phases of anaerobic respiration?
citric acid cycle
What are the two names of the changes that occur in the respiratory when you exercise?
The changes that occur are categorized by how oxygen is available for burning the fuel called ATP, and the terms are aerobic and anaerobic. Aerobic uses what is called the Krebbs, or citric cycle, to produce energy in the form of ATP. Anaerobic follows a lactic acid cycle that still produces ATP for energy but at a much lower rate.
Which stages of cellular respiration occur in organisms that go through anaerobic respiration?
In organisms that undergo anaerobic respiration, glycolysis occurs, which does not require oxygen. After glycolysis, fermentation takes place to regenerate NAD+ for glycolysis to continue in the absence of oxygen. The citric acid cycle and oxidative phosphorylation, which require oxygen, do not occur in anaerobic respiration.
Which of the process shown in the transparency is anaerobic which of the process is aerobic?
The process of glycolysis is anaerobic because it occurs in the absence of oxygen, producing two molecules of ATP. The citric acid cycle and oxidative phosphorylation are aerobic processes that require oxygen to generate ATP efficiently in the mitochondria.
What are the 3 metabolic pathways and which are aerobic?
The three metabolic pathways are glycolysis, the citric acid cycle (Krebs cycle), and the electron transport chain. Glycolysis can occur in both aerobic and anaerobic conditions. The citric acid cycle and electron transport chain are aerobic processes that require oxygen to generate ATP efficiently.
What is is the order of the steps for cellular respiration?
1. Glucose is metabolised to form pyruvate (glycolysis) Anaerobic (without oxygen): - Pyruvate is converted to lactate or ethanol Aerobic (in the presence of oxygen): - Pyruvate is converted to acetyl CoA - Citric Acid Cycle - Electron transport chain
What molecule is the common branch point for either the anaerobic or aerobic pathway?
The molecule that serves as the common branch point for either the anaerobic or aerobic pathway is pyruvate. Depending on the availability of oxygen, pyruvate can either be converted into acetyl-CoA to enter the aerobic pathway (Krebs cycle or citric acid cycle) or undergo fermentation in the absence of oxygen.
Krebs cycle anaerobic or aerobic?
Aerobic. The Krebs cycle is a way of producing ATP using oxygen. The use of oxygen for energy production means Aerobic (as opposed to Anaerobic or without-oxygen).
Is the Krebs cycle anaerobic?
No, the Krebs cycle is aerobic, meaning it requires oxygen to function.
Why do muscle cells get that burn?
Muscle cells cramp when undergoing anaerobic respiration, meaning they need to metabolize energy without using oxygen. This process is also known as the Kreb's Cycle and produces Citric Acid as a result, which causes the cramp. Because Citric Acid is only produced as a byproduct of anaerobic respiration, the easiest way to prevent a cramp is to breathe, thereby increasing oxygen flow to muscle cells.
