MRS GREN
Biology: Cambridge International GCSE Supplement, topic 1.1.1
MRS GREN
How can we decide whether something is a living organism? All living organisms (including animals, plants and bacteria) share seven characteristics that can be remembered using the acronym MRS GREN:

M
- Movement

R
- Respiration

S
- Sensitivity

G
- Growth

R
- Reproduction

E
- Excretion

N
- Nutrition