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Questions and Answers
Which state of matter has particles that are very far apart and move about randomly at high speeds?
Which state of matter has particles that are very far apart and move about randomly at high speeds?
- Solid
- Liquid
- Gas (correct)
- None of the above
In which form of passive transport do small molecules like oxygen, carbon dioxide, and water freely diffuse across the cell membrane?
In which form of passive transport do small molecules like oxygen, carbon dioxide, and water freely diffuse across the cell membrane?
- Active transport
- Facilitated diffusion
- Diffusion (correct)
- Osmosis
What is the movement of water molecules from a region of higher water concentration to a region of lower water concentration through a selectively permeable membrane called?
What is the movement of water molecules from a region of higher water concentration to a region of lower water concentration through a selectively permeable membrane called?
- Active transport
- Facilitated diffusion
- Osmosis (correct)
- Diffusion
Which type of transport requires cells to use up energy to move molecules across the cell membrane against the natural concentration gradient?
Which type of transport requires cells to use up energy to move molecules across the cell membrane against the natural concentration gradient?
How do materials like food particles move into the cell when they are too large to cross the cell membrane?
How do materials like food particles move into the cell when they are too large to cross the cell membrane?
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