Table of Contents
What is the Kreb cycle in simple terms?
Definition of Krebs cycle : a sequence of reactions in the living organism in which oxidation of acetic acid or acetyl equivalent provides energy for storage in phosphate bonds (as in ATP) — called also citric acid cycle, tricarboxylic acid cycle.
What is the Krebs cycle where does it take place?
mitochondrial matrix
Where Does the Krebs Cycle Take Place? The Krebs cycle happens only within the mitochondrial matrix. Pyruvate is formed in the cytosol of the cell, then imported into the mitochondria. Here, it is converted to acetyl CoA and imported into the mitochondrial matrix.
Where does the Krebs cycle take place and why?
In eukaryotes, the Krebs cycle reactions take place in the mitochondrial matrix, a dense solution that surrounds the mitochondria crests: in addition to water, the matrix contains all the enzymes necessary for the biochemical reactions of the cycle, coenzymes, and phosphates.
Where in the cell does the Krebs cycle take place?
mitochondria The Krebs cycle takes place in the mitochondrial ma…trix (the inner mitochondrial space). (Description: The Krebs cycle is the second stage in the oxidation of glucose during cellular respiration.) In the mitochondria of the cell.
Where does Krebs cycle take place?
The Krebs cycle and electron transport occur in the mitochondria. The Krebs cycle takes place in the matrix, and electron transport takes place on the inner membrane. During the Krebs cycle, pyruvate undergoes a series of reactions to produce two more molecules of ATP and also several molecules of NADH and FADH2. Click to see full answer
Which molecules can enter the Krebs cycle?
The molecule that enters the krebs cycle is a form of pyruvate that has been modified known as simply as Acetyl-CoA. This molecule is made up of Acetate and and a Coenzyme simply known as coenzyme A . Acetyl-CoA is received by oxaloacetate (the molecule that is regenerated) to form citrate .
Where are molecules used in the Krebs cycle?
The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and flavin adenine dinucleotide (FADH 2), as well as some ATP. The Krebs cycle occurs in the mitochondrion of a cell (see Figure 6-1).