Question

Which one of the following is not a four carbon compound formed during Krebs cycle?

• A. Succinic acid
• B. Malic acid
• C. Fumaric acid
• D. Citric acid

Answer 1

Answer:

D. Citric acid

• Krebs cycle, also known as the citric acid or tricarboxylic acid cycle

• A metabolic intermediate cycle involving the terminal steps in the conversion of carbohydrates, fats, or proteins to carbon dioxide and water with concomitant release of energy necessary for growth, movement, luminescence, chemosynthesis, and reproduction.

• Krebs Cycle takes place in the mitochondria. The Krebs Cycle was discovered by Hans Krebs.

• The cycle starts with acetyl-CoA which is derived from carbohydrates, fats, and proteins. It enters the cycle and gets converted into citrate, a six-carbon molecule.