AP BIOLOGY

CELL RESPIRATION

OXIDATIVE PHOSPHORYLATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which passes electrons from the original glucose molecule into the electron transport chain
A
NADH & FADH2
B
ATP & ADP
C
citric acid
D
acetyl CoA
Explanation: 

Detailed explanation-1: -All of the electrons that enter the transport chain come from NADH and FADH 2start subscript, 2, end subscript molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle.

Detailed explanation-2: -Electrons from NADH enter the electron transport chain in complex I, which consists of nearly 40 polypeptide chains (Figure 10.8). These electrons are initially transferred from NADH to flavin mononucleotide and then, through an iron-sulfur carrier, to coenzyme Q-an energy-yielding process with

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