Question

Inner mitochondrial membrane possesses which of the following set of enzymes?

• A. ATP-synthetase, succinate dehydrogenase and respiratory chain enzymes
• B. NADH-cytochrome reductase and monomeric oxidase
• C. Malate and isocitrate dehydrogenases, fumarate, aconitase and citrate synthetase
• D. Adenylate kinase and nucleoside diphosphokinase.

Answer 1

The correct option is A ATP-synthetase, succinate dehydrogenase and respiratory chain enzymes

• The mitochondria is a double-membraned cell organelle, known as the powerhouse of the cell which is present in all eukaryotic cells.
  
• The inner membrane of the mitochondria is the site of the electron transport chain (aerobic respiration) therefore, consists of respiratory chain enzymes.
• The enzyme ATP synthase is embedded in the inner mitochondrial membrane helps in the synthesis of ATP molecule (energy currency of the cell).
  
• Succinate dehydrogenase is a part respiratory complex II which is present in the inner mitochondrial membrane and is responsible for converting succinate to fumarate in the citric acid cycle or Krebs cycle.
  
• So, the correct answer is 'ATP-synthetase, succinate dehydrogenase and respiratory chain enzymes'.