| A | B |
|---|
| Where are receptor molecules? | On the surface of the cell membrane |
| What are receptor molecules? | Specialized proteins whose shape identifies and attaches to a chemical messenger that fits it. |
| A protein only attaches to the chemical messenger if | it's an exact match and has the same shape |
| Name one example of a chemical receptor | An estrogen receptor |
| What uses shape specificity? | 1. Enzymes 2. Antibodies 3. Receptors |
| Enzyme reactions will ONLY happen if | matched up with the correct shape |
| Name 2 types of passive transport | 1. Diffusion 2. Osmosis |
| Diffusion and osmosis are processes where molecules | go from higher concentration to lower concentration |
| Is energy used in passive transport? | No |
| What is diffusion? | Movement of molecules from high concentration areas to low concentration areas |
