Overview of Metabolism [Part 2] | The Citric Acid Cycle

The video provides an overview of metabolism, focusing on glycolysis, the citric acid cycle, and the electron transport chain. It explains the conversion of glucose to pyruvate, the role of acetyl CoA, and the production of NADH and FADH2. The video also covers the metabolism of amino acids and the function of NADH and FADH2 in energy production through oxidative phosphorylation.

What is the end product of glycolysis?

• Acetyl CoA

• Pyruvate

• Oxaloacetate

• Citrate

How many NADH molecules are produced per glucose molecule during glycolysis?

• 4

• 3

• 2

• 1

Which enzyme is responsible for the conversion of pyruvate to acetyl CoA?

• Pyruvate dehydrogenase

• Pyruvate kinase

• Malate dehydrogenase

• Citrate synthase

Which enzyme converts citrate to isocitrate in the citric acid cycle?

• Fumarase

• Citrate synthase

• Aconitase

• Isocitrate dehydrogenase

What is the role of succinyl CoA synthetase in the citric acid cycle?

• Isomerization

• Oxidative decarboxylation

• Electron transport

• Substrate-level phosphorylation

Which complex in the electron transport chain is also known as succinate dehydrogenase?

• Complex IV

• Complex III

• Complex II

• Complex I

What is the primary function of NADH in the electron transport chain?

• To produce GTP

• To carry electrons

• To synthesize proteins

• To convert pyruvate to acetyl CoA

What is the significance of FADH2 in cellular respiration?

• It is a waste product

• It is a reduced electron carrier

• It acts as a substrate for glycolysis

• It directly produces ATP

Which amino acids are considered purely ketogenic?

• Leucine and lysine

• Isoleucine and phenylalanine

• Tryptophan and tyrosine

• Alanine and glycine

What is the main difference between ketogenic and glucogenic amino acids?

• Their ability to form ATP

• Their role in glycolysis

• Their metabolic end products

• Their solubility in water