Figure 6: Metabolism in a eukaryotic cell: Glycolysis, the citric acid cycle, and oxidative phosphorylation. Glycolysis takes place in the cytoplasm.

In two recent papers, an international team of scientists describes the first known nitrogen-fixing organelle within a eukaryotic cell. The organelle is the fourth example in history of primary ...

But the way eukaryotic cells engulf bacteria is energetically costly; it involves extensive and rapid remodeling of the cytoskeleton, the protein scaffolding beneath the cell membrane. A cell almost ...

Cells generate energy from the controlled breakdown of food molecules. Learn more about the energy-generating processes of glycolysis, the citric acid cycle, and oxidative phosphorylation.