Question

The inner membrane of mitochondrion is very selective in respect to entering, molecule. Name a molecule that regularly enters in it

• A. Pyruvic acid
• B. Glucose
• C. ATP
• D. Oxaloacetic acid

Answer 1

The correct option is A Pyruvic acid

Cellular respiration occurs firstly in the cytoplasm and then in mitochondria. Glycolysis occurs in the cytoplasm in which glucose breaks into two pyruvates which are transported to mitochondria through an inner mitochondrial membrane which performs the Krebs cycle. This pyruvate regularly enters the mitochondria to start the Krebs cycle and complete cellular respiration.

So, the correct option is ' pyruvic acid'.