What all living things share
What all living things share

An organism is an individual living thing made of one or more cells. Living organisms carry out life processes that keep them alive and allow their species to continue.
Step-by-step lessons on Edexcel IGCSE Biology Characteristics of living organisms. Each one builds up to exam-style questions. Start with the foundational cell biology and core content before moving on to the more data-heavy ecology, genetics and practical-skills topics, which carry a large share of the exam marks.