NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Pyruvic acid is oxidized during ____
A
the Krebs cycle
B
the electron transport chain
C
fermentation
D
glycolysis
Explanation: 

Detailed explanation-1: -The pyruvic acid formed during glycolysis enters into a cycle of events called Krebs cycle where it is oxidised to form carbon dioxide and water. It forms the aerobic pathway of respiration.

Detailed explanation-2: -During the process, the pyruvic acid molecule is broken down by an enzyme, one carbon atom is released in the form of carbon dioxide, and the remaining two carbon atoms are combined with a coenzyme called coenzyme A. This combination forms acetyl-CoA.

Detailed explanation-3: -How pyruvate from glycolysis is converted to acetyl CoA so it can enter the citric acid cycle. Pyruvate is modified by removal of a carboxyl group followed by oxidation, and then attached to Coenzyme A.

Detailed explanation-4: -The Krebs’ cycle oxidizes the carbon atoms of the acetyl group of acetyl coenzyme A resulting from the catabolism of lipids, carbohydrates, and proteins to CO2 and transfers the electrons to NAD+ and FAD that transform to NADH and FADH2.

There is 1 question to complete.