Bio "Cells" Unit Test Part 2- Cell Membrane

How does the cell membrane control the movement of substances in and out of the cell as well as within the cell itself?

• The membrane is selectively permeable so it can choose what to let enter/leave the cell

• Passive and Active transport (diffusion, osmosis, facilitated diffusion, endocytosis and exocytosis) all controls the movement of what goes in and out of the cell

How does the cell membrane maintain homeostasis?

• Its selectively permeable membrane controls what goes into/out of the cell, keeping it stable

• Different types of transports (active and passive) control what leaves the cell to keep it balanced

• Vesicle transport (endocytosis and exocytosis) brings bigs things in and out of the cell when needed, also keeping the cell stable

Which type of diffusion does not require energy?

Passive Transport

Movement of molecules from a area of high contraction to a low concentration

Diffusion (Passive Transport)

Osmosis Definition

The diffusion of water across a selectively permeable membrane

Hypertonic Solution Definition

High solute concentration outside of the cell

Hypotonic Solution Definition

High solute concentration inside the cell

Isotonic Solution Definition

Concentration is the same on both sides of the cell- water doesn’t move

Hypertonic and Hypotonic Solutions are an example of what?

Osmosis (Passive Transport)

Diffusion, osmosis, and facilitated diffusion is an example of what type of transport? 

Passive transport

This represents what type of solution?

Hypotonic Solution

This represents what type of solution?

Hypertonic Solution

This represents what type of solution?

Isotonic Solution

Uses protein channels to move materials across the cell membrane

Facilitated Diffusion

What type of transport requires energy?

Active Transport

Movement of molecules from a area of low concentration to high concentration

Active transport

Protein Pump definition

Proteins embed into the membrane that helps move ions and small molecules

Movement of molecules into the cell by vacuoles

Endocytosis

Movement of molecules out of the cell by vacuoles

Exocytosis

What type of transport do protein pumps, endocytosis, and exocytosis represent?

Active transport

Movement against the graditant

Active transport

Movement with the gradient

Passive transport

What solution causes water to diffuse out of the cell?

Hypertonic Solution

What solution causes water to diffuse into the cell?

Hypotonic Solution