Characteristics of Living Things

What is Characteristics of Living Things?

Within Biology, which covers cells, the human body, genetics, evolution, plants and ecosystems: the science of living things, this topic explains Characteristics of Living Things. Biology topics show how living things work, from the cell up to whole ecosystems, with models you can explore step by step.

Check that you can explain Characteristics of Living Things in your own words and give one example from everyday life. If you can do that, you have understood the core idea.

Understanding Characteristics of Living Things helps you explain how living things stay alive and respond to their surroundings, which is central to biology exams.

Characteristics of Living Things in detail

All living organisms share seven characteristics, often remembered as MRS GREN: movement, respiration, sensitivity, growth, reproduction, excretion and nutrition. Living things move in some way, release energy from food, respond to changes in their surroundings, grow, make offspring, remove waste and take in nutrients.

Viruses are a borderline case, because they reproduce only inside host cells and do not carry out the other processes themselves. Using these characteristics lets biologists decide whether something is alive and gives a starting point for classifying organisms and understanding how they survive.

How the interactive helps you understand Characteristics of Living Things

Click a card to flip it and reveal the answer, then move on to the next one.

Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Characteristics of Living Things.

Real-life uses and examples

• Explain how Characteristics of Living Things helps a living thing stay alive, using a plant or animal example.
• Connect Characteristics of Living Things to health, food and medicine in everyday life.
• Use Characteristics of Living Things to interpret a diagram, graph or microscope image from a practical.

Common mistakes to avoid

• Using everyday words, such as “energy” or “bad”, without their scientific meaning.
• Listing the steps of a process without saying how one step causes the next.
• Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.