IGCSE Movement of substances in and out of cells

What is the definition of diffusion?

• Movement of water from a high concentration to a low concentration through a partially-permeable membrane
• Movement of molecules from a low concentration to a high concentration using energy
• Movement of molecules from a high concentration to a low concentration

How does diffusion differ from active transport?

• Diffusion requires energy
• Diffusion moves from a low concentration to a high concentration
• Diffusion moves through a membrane
• Diffusion moves from a high concentration to a low concentration

Which process requires energy?

• Diffusion
• Osmosis
• Active Transport

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NGSS.HS-LS2-5

Which process occurs to move oxygen into the blood in the ungs?

• Diffusion
• Osmosis
• Active Transport

How does osmosis differ from active transport?

• Osmosis moves molecules from a high to a low concentration
• Osmosis requires energy
• Osmosis moves through a membrane
• Osmosis moves water from a dilute to a concentrated solution

What is the difference between diffusion and osmosis?

• Diffusion is through a partially permeable membrane
• Osmosis is only water
• Osmosis moves from a high salt concentration to a low salt concentration

What is the definition of osmosis?

• Movement of water from a high concentration to a low concentration through a partially-permeable membrane
• Movement of molecules from a low concentration to a high concentration using energy
• Movement of molecules from a high concentration to a low concentration

What is the definition of active transport?

• Movement of water from a high concentration to a low concentration through a partially-permeable membrane
• Movement of molecules from a low concentration to a high concentration using energy
• Movement of molecules from a high concentration to a low concentration

Which process moves ions from the soil into roots?

• Diffusion
• Osmosis
• Active Transport

Which process explains why animal cells shrink in a salt solution?

• Diffusion
• Osmosis
• Active Transport