The video explains the mitochondrial reactions that convert food into ATP energy. It covers the steps from glycolysis to the citric acid cycle, detailing the production of CO2, NADH, FADH2, and ATP. The process involves the conversion of pyruvate to acetyl CoA, the formation of citric acid, and the regeneration of oxaloacetate. The video also highlights the energy transformations and the role of GTP in the cycle, emphasizing the breakdown of glucose into two pyruvates, each undergoing the cycle to produce energy.

What is the primary function of the cycle of reactions occurring in mitochondria?

• To create proteins

• To generate ATP energy

• To produce glucose

• To synthesize lipids

Which molecule is formed when pyruvate loses a carbon atom?

• Isocitrate

• Citric acid

• Acetyl CoA

• Oxaloacetate

What is the role of succinate dehydrogenase in the citric acid cycle?

• To regenerate oxaloacetate

• To form acetyl CoA

• To convert succinate to fumarate

• To produce citric acid

How many carbon dioxide molecules are produced per cycle of reactions in the mitochondria?

• Three

• One

• Four

• Two

What happens to the second pyruvate molecule derived from glucose?

• It is used to synthesize proteins

• It is converted into glucose

• It undergoes the citric acid cycle

• It is stored as glycogen