CELL RESPIRATION
THE KREBS CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
I only
|
|
|
I and III only
|
|
|
II only
|
|
|
II and III only
|
Detailed explanation-1: -Answer and Explanation: The correct answer is option C because NAD+ and FAD act as electron and hydrogen atom acceptors in earlier sections of cellular respiration, such as glycolysis and the Kreb’s cycle, where they become NADH and FADH2.
Detailed explanation-2: -Answer and Explanation: The function of NAD+ and FAD in glycolysis, CAC (citric acid cycle), and ETC (electron transport chain) for ATP synthesis are to accept electrons and carry them to the electron transport chain in the mitochondria.
Detailed explanation-3: -NADH and FADH2 molecules formed during Glycolysis and Krebs Cycle carry their electrons to the electron transport chain. The electron transport chain creates a proton gradient that ultimately leads to the production of a large amount of ATP.
Detailed explanation-4: -Coenzymes including FAD and NAD+ are reduced in the Krebs cycle, which transfers electrons by the electron transport chain with oxygen as the final acceptor. Three NADH+ and one FADH2 are generated in one cycle which, on entering the electron transport chain, yields 10 ATP.