Learn about the ultrastructure and organelles of animal, plant, fungal and bacterial cells. BBC Bitesize Scotland revision for SQA National 5 Biology.

Cell structure: Function: Cytoplasm: Where enzymes and other proteins are made. Location of reactions in anaerobic respiration. Nucleus: Contains DNA which carries the genetic code for making ...

Heterogeneity in the polysaccharide constituents of plant cell walls has been recognized since the earliest chemical analyses of isolated wall preparations. Clear and dramatic differences in ...

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.