| A | B |
|---|
| chemical reaction | bonds between atoms are broken and new bonds form to make different molecules |
| active transport | process of using energy to move materials through a membrane |
| lipid | fats, oils and waxes found in living things |
| protein | made of smaller molecules called amino acids |
| nucleic acid | molecules that hold the instructions for the maintenance, growth, and reproduction of a cell. (two types: DNA and RNA) |
| chemical energy | energy stored in the bonds between atoms of every molecule |
| glucose | major energy source for most cells (sugar molecule) |
| photosynthesis | process that plant cells use to change the energy from sunlight into chemical energy |
| chlorophyll | light-absorbing picgment, or colored substance that traps the energy in sunlight |
| cellular respiration | cells use oxygen to release energy stored in sugars such as glucose |
| fermentation | process by which cells release energy without oxygen |
| diffusion | process by which molecules spread out |
| passive transport | materials move without using the cells energy |
| osmosis | diffusion of water through a membrane |
| carbohydrate | provide the cell with energy |
