Go back to the beginning of your life and find out how you were created. Life processes - Living processes - Cells Learning Points Human cells consist of a membrane, cytoplasm and a nucleus. A zygote is a single cell formed by the fusion of an egg and sperm. A zygote divides to form new cells. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.