Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Where does glycolysis occur in the cell?

Glycolysis happens in the cytoplasm because it’s a cytosolic pathway that uses soluble enzymes floating in the cell’s aqueous interior to break down glucose into two pyruvate molecules. This process yields a small amount of ATP and NADH right there in the cytosol and does not require any membrane-bound organelles. After glycolysis, the pyruvate typically enters mitochondria for further oxidation, linking to the TCA cycle, but glycolysis itself does not occur inside mitochondria, the nucleus, or the endoplasmic reticulum.

Glycolysis happens in the cytoplasm because it’s a cytosolic pathway that uses soluble enzymes floating in the cell’s aqueous interior to break down glucose into two pyruvate molecules. This process yields a small amount of ATP and NADH right there in the cytosol and does not require any membrane-bound organelles. After glycolysis, the pyruvate typically enters mitochondria for further oxidation, linking to the TCA cycle, but glycolysis itself does not occur inside mitochondria, the nucleus, or the endoplasmic reticulum.