Why cells divide
Why cells divide
Multicellular organisms need new cells for growth, repair, and replacement of worn-out cells. Some single-celled eukaryotes also use mitosis for asexual reproduction.
Step-by-step lessons on Edexcel A A Level Biology Mitosis, cell cycle and stem cells. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.