Cellular Respiration Pathways and ATP Production Explained

The video explains ATP as the main energy currency in cells and details the process of aerobic respiration in eukaryotic cells. It covers glycolysis, the Krebs cycle, and the electron transport chain, highlighting how ATP is produced. The role of electron carriers like NADH and FADH2 is discussed, along with the importance of oxygen as the final electron acceptor. The video concludes with oxidative phosphorylation, emphasizing the necessity of oxygen for efficient ATP production.

What is the primary role of ATP in cells?

• To act as a structural component

• To serve as the main energy currency

• To store genetic information

• To transport oxygen

Where does glycolysis occur within the cell?

• In the mitochondrial matrix

• In the nucleus

• In the cytosol

• On the inner mitochondrial membrane

What is the end product of glycolysis?

• Lactic acid

• Acetyl-CoA

• Carbon dioxide

• Pyruvate

Which molecule acts as an electron carrier during glycolysis?

• NADH

• Oxygen

• FADH2

• ATP

In which part of the mitochondria does the Krebs cycle take place?

• Inner membrane

• Outer membrane

• Intermembrane space

• Matrix

What is produced as a waste product during the Krebs cycle?

• Water

• Oxygen

• Carbon dioxide

• Glucose

What is the final electron acceptor in the Electron Transport Chain?

• NADH

• FADH2

• Oxygen

• Carbon dioxide

What is the main function of the proton gradient in the Electron Transport Chain?

• To generate a moving charge for ATP production

• To break down pyruvate

• To transport electrons

• To synthesize glucose

What enzyme is responsible for ATP production during oxidative phosphorylation?

• ATP synthase

• Cytochrome c oxidase

• ATPase

• NADH dehydrogenase

How many ATP molecules are estimated to be produced through oxidative phosphorylation?

• 2

• 50

• 10

• 30