EXERCISE 1

Cell Transport Mechanisms and Permeability

1. Match each of the definitions in Column A with the appropriate term in Column B.

|Column A |Column B |

|__E__ term used to describe a solution that has a lower |a. diffusion |

|concentration of solutes compared to another solution |b. facilitated diffusion |

| |c. osmosis |

|__G__ term used to describe a solution that has a higher |d. active transport |

|concentration of solutes compared to another solution |e. hypotonic |

| |f. isotonic |

|__A__ the movement of molecules from an area of higher |g. hypertonic |

|concentration to an area of lower concentration as a result of | |

|random thermal motion | |

| | |

|__D__ the movement of molecules across a membrane that requires| |

|the expenditure of cellular energy (ATP) | |

| | |

|__C__