EVERYDAY SCIENCE

Detailed explanation-1: -While the Krebs cycle does produce carbon dioxide, this cycle does not produce significant chemical energy in the form of adenosine triphosphate (ATP) directly, and this reaction sequence does not require any oxygen.

Detailed explanation-2: -During the Krebs cycle the products are oxaloacetic acid, carbon dioxide, one ATP molecule, three NADH, and one FADH2 molecule. The Krebs cycle starts with the combining of acetyl-CoA and oxaloacetic acid to form citric acid.

Detailed explanation-3: -The cycle starts with a three-carbon molecule, that is, pyruvic acid, which is further divided into acetyl coenzyme A which then combines further with oxaloacetic acid to generate citric acid. The end product of the Krebs cycle is an organic acid found in citrus fruits like lemons, oranges, etc. known as citric acid.

Detailed explanation-4: -Step 1: Acetyl CoA (two carbon molecule) joins with oxaloacetate (4 carbon molecule) to form citrate (6 carbon molecule). Step 2: Citrate is converted to isocitrate (an isomer of citrate) Step 3: Isocitrate is oxidised to alpha-ketoglutarate (a five carbon molecule) which results in the release of carbon dioxide.