What is the citric acid cycle summary?
The Citric Acid Cycle is a metabolic pathway that uses a two-carbon molecule, and a four-carbon molecule to form a six-carbon molecule that is used to produce NADH, carbon dioxide, ATP and FADH2. The cycle involves eight chemical reactions, and at the end, the original four-carbon molecule is produced.
What is known as the citric acid cycle?
The tricarboxylic acid (TCA) cycle, also known as the Krebs or citric acid cycle, is the main source of energy for cells and an important part of aerobic respiration. The cycle harnesses the available chemical energy of acetyl coenzyme A (acetyl CoA) into the reducing power of nicotinamide adenine dinucleotide (NADH).
What is the main role of the citric acid cycle?
The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid cycle, is at the center of cellular metabolism, playing a starring role in both the process of energy production and biosynthesis. It finishes the sugar-breaking job started in glycolysis and fuels the production of ATP in the process.
What are the steps of citric acid cycle?
Krebs cycle Steps
- Oxidative Decarboxylation of pyruvate to Acetyl CoA.
- Step 1: Condensation of acetyl CoA with oxaloacetate.
- Step 2: Isomerization of citrate into isocitrate.
- Step 3: Oxidative decarboxylations of isocitrate.
- Step 4: Oxidative decarboxylation of α-ketoglutarate.
How do you remember the citric acid cycle?
Kreb’s cycle (Citric Acid Cycle) : Mnemonic
- Mnemonic: Our City Is Kept Safe And Sound From Malice.
- Remember the enzymes of the cycle:
- Another Mnemonic: Citrate Is Kreb’s Starting Substrate For Making Oxaloacetate.
- Alcoholism and Hypoglycemia:
Why is citric acid cycle called a cycle?
The citric acid cycle is called a cycle because the starting molecule, oxaloacetate (which has 4 carbons), is regenerated at the end of the cycle.
Why is the citric acid cycle called a cycle?
Where does the citric acid cycle occur?
Within the mitochondrion, the citric acid cycle occurs in the mitochondrial matrix, and oxidative metabolism occurs at the internal folded mitochondrial membranes (cristae).