Question

Question 1: Some plants contain an alternate complex in the mitochondrial inner membrane (AOX). This complex picks up electrons from QH2 and transfers them directly to oxygen. During the transfer, no protons are moved across the mitochondrial membrane. How many ATP would be made from NADH when plants utilize AOX rather than the route to oxygen discussed in class?

A) 1

B) 2

C) 2.5

D) 0

Question 2) Some plants contain an alternate complex in the mitochondrial inner membrane (AOX). This complex picks up electrons from QH2 and transfers them directly to oxygen. During the transfer, no protons are moved across the mitochondrial membrane. If electrons from NADH are routed through AOX rather than the route discussed in class, then

A) less ATP is produced in the cell and less heat is produced in the cell.

B) less ATP is produced in the cell and more heat is produced in the cell.

C) more ATP is produced in the cell and less heat is produced in the cell.

D) more ATP is produced in the cell and more heat is produced in the cell.

Answer 1

Question 01: (B)

"Oxidative phosphorylation” is an aerobic process that involves a series of reactions, which include the transfer of electrons from the NADH or FADH2 to oxygen. This process involves the transfer of electrons (oxidation) by a series of electron carriers (electron transport system (ETS)) and attachment of phosphate group (phosphorylation). Each FADH2 produces 2 ATPs.

Question 02:

(D) more ATP is produced in the cell and more heat is produced in the cell.