AP BIOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -The mitochondrial matrix has the required enzymes and environment for the complex reactions of the Krebs cycle to take place. Further, the products of the Krebs cycle drive the electron transport chain and oxidative phosphorylation, both of which occur in the inner mitochondrial membrane.

Detailed explanation-3: -In the mitochondrion, the matrix is the space within the inner membrane.

Detailed explanation-4: -The Krebs cycle It involves a series of oxidative decarboxylation steps, beginning in bacteria with acetyl-CoA and results in complete oxidation of the starting substrate (i.e., glucose) coupled with release of CO2.

Detailed explanation-5: -In what part of a mitochondrion does the Krebs cycle occur? The Krebs cycle occurs in the mitochondrion matrix.