10 Questions
Where does the citric acid cycle occur in eukaryotes?
Mitochondrial matrix
What is the primary purpose of the citric acid cycle?
To oxidize pyruvate to CO2 and generate ATP
What is the importance of the sulfhydryl group in coenzyme A?
It is responsible for capturing the acetyl group in a high-energy form
What maintains charge balance on either side of the inner mitochondrial membrane (IMM) during pyruvate transport?
Pyruvate carrier protein
Which vitamin plays a crucial role in activating carriers like coenzyme A in metabolic pathways?
B-vitamins
Where does pyruvate get completely oxidized to CO2 in the presence of oxygen?
Mitochondrial matrix
Which organelle's inner membrane contains many transporters for moving citric acid cycle intermediates?
Mitochondrion
What is the fate of pyruvate in the absence of oxygen?
Undergoes fermentation in the cytosol
What feature of the outer mitochondrial membrane allows small molecules to pass through?
Porin protein complexes
Which part of the mitochondrion is characterized by many infoldings into the matrix known as cristae?
Inner membrane
Test your knowledge on the fate of pyruvate, its production by glycolysis, transportation into the mitochondrial matrix, complete oxidation to CO2, and energy transfer to electron carriers. Explore key concepts related to the Pyruvate Dehydrogenase Complex and the Citric Acid Cycle.
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