AP BIOLOGY

LABORATORY REVIEW

CELL RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In cellular respiration the stage that produces the most ATP is called
A
Gylocolysis
B
Krebs cycle
C
Electron transport chain
D
Light independent cycle
Explanation: 

Detailed explanation-1: -The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS). The inner mitochondrial membrane holds the ATPase enzyme and the complexes for ETS.

Detailed explanation-2: -The electron transport chain produces most of the ATP generated during cellular respiration. The electron transport chain can produce over 30 molecules of ATP for each glucose molecule broken down. This is in contrast to glycolysis and the citric acid cycle, which each only net about two ATP molecules.

Detailed explanation-3: -The process of forming ATP from the electron transport chain is known as oxidative phosphorylation. Electrons carried by NADH + H+ and FADH2 are transferred to oxygen via a series of electron carriers, and ATPs are formed.

Detailed explanation-4: -The Electron transport chain is the third stage of cellular respiration and is illustrated in Figure 4.10. 8. During this stage, high-energy electrons are released from NADH and FADH2, and they move along electron-transport chains on the inner membrane of the mitochondrion.

Detailed explanation-5: -The protein ATP-synthase uses the energy liberated to create a proton gradient, which is then utilised in chemiosmosis to produce a significant amount of ATP. The electrochemical gradient created by the electron transport chain makes it easier for ATP synthase to manufacture ATP by chemiosmosis.

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