| A | B |
|---|
| amino acids | molecules that are the building blocks of proteins |
| cellular respiration | the chemical reaction between oxygen and glucose that releases energy into cells |
| carbon dioxide | a molecule made of carbon and oxygen atoms |
| chemical reaction | a process in which atoms rearrange to form new substances |
| circulatory system | the body system that transports molecules to and from all cells of the body |
| claim | a proposed answer to a question about the natural world |
| digestive system | the body system that takes in food and breaks it down |
| energy | the ability to make things move or change |
| evidence | information about the natural world that is used to support or go against (refute) a claim |
| glucose | a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms |
| metabolism | the body’s use of molecules for energy and growth |
| molecule | a group of atoms joined together in a particular way |
| oxygen | a molecule that organisms get from the air or water around them and use to release energy |
| proteins | a category of large molecules that perform important functions inside living things |
| reasoning | the process of making clear how your evidence supports your claim |
| respiratory system | the body system that takes in oxygen and releases carbon dioxide |
| scientific argument | a claim supported by evidence |
| starch | a type of energy storage molecule made of many glucose molecules connected together |
| system | a set of interacting parts forming a complex whole |
