Cellular Respiration Part 3: The Electron Transport Chain and Oxidative Phosphorylation

The video tutorial explains oxidative phosphorylation, a key step in cellular respiration that generates the most ATP. It covers the electron transport chain, chemiosmosis, and ATP synthase, highlighting how NADH and FADH2 from glycolysis and the citric acid cycle contribute to ATP production. The tutorial summarizes the entire process of cellular respiration, emphasizing the role of mitochondria as the cell's energy engine.

What is the primary role of NADH and FADH2 in cellular respiration?

• To break down glucose

• To directly produce ATP

• To synthesize proteins

• To transport electrons to the electron transport chain

Which component in the electron transport chain is not a protein?

• ATP synthase

• Ubiquinone

• Flavin mononucleotide

• Cytochrome

What is the main function of ATP synthase in the mitochondria?

• To break down glucose

• To transport electrons

• To create a proton gradient

• To synthesize ATP from ADP and inorganic phosphate

What is the process called where protons move back into the mitochondrial matrix through ATP synthase?

• Electron transport

• Chemiosmosis

• Citric acid cycle

• Glycolysis

Approximately how many ATP molecules are generated from one glucose molecule through oxidative phosphorylation?

• 4 ATP

• 38 ATP

• 2 ATP

• 26 or 28 ATP