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Multiple Choice
Which of the following is NOT true regarding glycolysis?
A
Glycolysis does not require oxygen to proceed.
B
Glycolysis produces a net gain of 2 ATP molecules per glucose molecule.
C
The end product of glycolysis is pyruvate.
D
Glycolysis occurs in the mitochondria of eukaryotic cells.
Verified step by step guidance
1
Step 1: Understand the process of glycolysis. Glycolysis is the first step in cellular respiration, where glucose is broken down into two molecules of pyruvate. This process occurs in the cytoplasm of the cell, not in the mitochondria.
Step 2: Recall that glycolysis is an anaerobic process, meaning it does not require oxygen to proceed. This is a key feature of glycolysis and distinguishes it from other stages of cellular respiration.
Step 3: Note that glycolysis results in a net gain of 2 ATP molecules per glucose molecule. This is achieved through substrate-level phosphorylation during the process.
Step 4: Confirm that the end product of glycolysis is pyruvate. Pyruvate can then enter the mitochondria for further processing in the presence of oxygen (via the Krebs cycle and oxidative phosphorylation) or be converted into lactate in anaerobic conditions.
Step 5: Identify the incorrect statement: Glycolysis does not occur in the mitochondria of eukaryotic cells; it occurs in the cytoplasm. This makes the statement 'Glycolysis occurs in the mitochondria of eukaryotic cells' false.