Science Puzzle

4. acids: molecules that are the building blocks of proteins.
6. system: the body system that takes in oxygen and releases carbon dioxide.
7. a category of large molecules that perform important functions inside living things.
8. system: the body system that transports molecules to and from all cells of the body.
10. a group of atoms joined together in a particular way.
16. smallest unit that can live on its own and that makes up all living organisms and the tissues of the body.
17. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms.

1. dioxide: a molecule made of carbon and oxygen atoms.
2. system: the body system that takes in food and breaks it down.
3. a collection of tissues that structurally form a functional unit specialized to perform a particular function.
5. argument: a claim supported by evidence.
9. A type of cell that receives and sends messages from the body to the brain and back to the body.
11. a molecule that organisms get from the air or water around them and use to release energy.
12. a set of interacting parts forming a complex whole.
13. a type of energy storage molecule made of many glucose molecules connected together.
14. the body’s use of molecules for energy and growth.
15. respiration: the chemical reaction between oxygen and glucose that releases energy into cells.