| A | B |
|---|
| Smallest Units of Life | Cells |
| Characteristics that all Cells share | Cell Theory |
| Regulates what goes in and out of cell | Cell Membrane |
| The cell's smallest component | Atom |
| Atoms are mostly... | empty space |
| electrons closer to nucleus have... | less energy |
| Bonds that share electrons are... | covalent |
| The atomic number equals the number of... | protons |
| What water stores | heat |
| Measures percent of hydrogen concentration in something | pH scale |
| Carbohydrates, lipids, and proteins are... | macromolecules |
| What carbohydrates provide | support |
| What carbohydrates store | energy |
| Lipids do not dissolve in... | water |
| Proteins are long chains of... | Amino acids |
| ATP is the cell's... | fuel |
| ATP is an... | energy molecule |
