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Questions and Answers
Which process moves a substance from a region of high concentration to a region of low concentration?
Which process moves a substance from a region of high concentration to a region of low concentration?
- Osmosis
- Simple diffusion (correct)
- Active transport
- Facilitated diffusion
Which type of transport mechanism requires no energy to function?
Which type of transport mechanism requires no energy to function?
- Osmosis
- Active transport
- Simple diffusion (correct)
- Facilitated diffusion
What is the major function of the cell membrane in regulating the entry and exit of molecules?
What is the major function of the cell membrane in regulating the entry and exit of molecules?
- Only allowing large molecules to enter the cell
- Preventing all molecules from entering the cell
- Allowing molecules to move in and out freely
- Regulating the movement of molecules into and out of the cell (correct)
In which type of transport does an ion or molecule move down its concentration or electrochemical gradient?
In which type of transport does an ion or molecule move down its concentration or electrochemical gradient?
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What is the process in which water moves across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration?
What is the process in which water moves across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration?
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