Biology Vocabulary

1. Able to detect and react to changes in the environment.
5. A structure made of different tissues that work together to perform a specific function.
6. All of the chemical reactions that occur inside an organism to keep it alive.
7. An organism that makes its own food, usually using light energy or chemical energy.
10. Describes a cell that has a nucleus and other membrane-bound organelles.
12. An organism that breaks down dead organisms and waste, returning nutrients to the environment.
15. An individual living thing.
16. An organism that eats both plants and animals.

2. Describes a cell that does not have a nucleus or other membrane-bound organelles.
3. An organism that eats organisms that are already dead.
4. An organism that gets most of its food by eating other animals.
8. An organism that gets its food and energy by consuming other organisms or organic matter.
9. The science of naming, describing, and classifying organisms.
11. A group of similar cells that work together to perform a specific function.
13. The smallest unit of life that can carry out all necessary life processes.
14. System A group of organs that work together to perform major functions in an organism.