Where does the Krebs cycle occur in prokaryotes?

The Krebs cycle occurs in most aerobic prokaryotes, allowing them to metabolize glucose and other sugars, and oxygen. The pathway consists of a series of chemical reactions (enzymes) that convert the initial reaction of glycolysis (the breakdown of glucose into two pyruvates), to the production of other carbon compounds. The cycle is named after Hans Krebs, a German biochemist who developed a version of it in his lab. The primary function of the Krebs

Where does the Krebs cycle occur in archaea?

The archaea, which are among the most ancient forms of life on our planet, do not have a complete Krebs cycle. However, they do have some of the metabolic pathways and some of the enzymes involved that are required to run a partial Krebs cycle. The archaea use glycolysis for most of their energy production, so the Krebs cycle is only used to generate some of the energy they need.

Where does the Krebs cycle occur in prokaryotic cells?

Most prokaryotes don’t have a true nucleus; instead, their genetic material is stored in a chromosome located in a membrane-bound organelle known as a bacterium or a plasmid. The bacteria use membrane-bound enzymes instead of the large, multi-protein complexes found in eukaryotes to carry out most metabolic reactions, including the Krebs cycle. Therefore, the Krebs cycle occurs in the cytoplasm of prokaryotic cells, where the

Where does the Krebs cycle occur in bacteria?

While the TCA cycle is extremely common in bacteria, the Krebs cycle is much less common. Bacteria that engage in the Krebs cycle have a slightly different metabolic pathway than those that do not. This process is called the glyoxylate shunt. This pathway allows bacteria to metabolize fatty acids and sugars more efficiently than the TCA cycle does. However, the shunt is less efficient than the TCA cycle because it requires two reaction steps per metabolized carbon, instead of one

Where does the Krebs cycle occur in eukaryotes?

The Krebs cycle occurs in the cytosol of all eukaroytes. In plants, algae, fungi, and other single-celled eukaryotes, the Krebs cycle is often compartmentalized within a special organelle called the peroxisome. In humans, the Krebs cycle is a small portion of the metabolic network that occurs in the cell's mitochondria. For more information about the location of the Krebs cycle in animal cells, see Mitochondrial