Chapter 3.3 Cell Transport and Homeostasis

How does a cell maintain homeostasis?

• Regulates what enters and leaves the cell
• Flexibility
• Protective barrier
• Structure and support

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NGSS.HS-LS1-3

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

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NGSS.MS-LS1-2

Controlling what goes into or out of the cell without energy is called

• active transport
• endocytosis
• passive transport
• exocytosis

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NGSS.MS-LS1-2

What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?

• Diffusion
• Osmosis
• Active Transport
• Facilitated Diffusion

The difference in the concentration of a substance from one location to another is called 

• diffusion
• osmosis
• concentration gradient
• passive transport

The illustration represents a type of:

• Passive Transport

• Active Transport

• Ground Transport

What does semi-permeable mean?

• Some molecules can move through the membrane

• Nothing can move through the membrane

• All molecules can pass through the membrane.

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NGSS.HS-LS2-3

Which is NOT a form of active transport?

• Endocytosis
• Osmosis
• Exocytosis
• Pinocytosis

When cells form a vesicle to release materials, which form of transport is occurring? 

• Endocytosis
• Exocytosis
• Facilitated Diffusion
• Osmosis

When the concentration of molecules on both sides of a membrane is the SAME, the solution is

• isotonic
• hypertonic
• hypotonic