Cell Membrane

Question 1

Cell membrane (plasma membrane)

Answer 1

Separates internal metabolic events from the external environment

Question 2

What can pass through a cell membrane

Answer 2

Only small, uncharged, polar molecules can pass through (h2O CO2)

Question 3

Channel proteins

Answer 3

Provide passageways through the membrane for water soluble substances

Question 4

Transport proteins

Answer 4

Spend energy (ATP) to transfer materials across the membrane

Question 5

Receptor proteins

Answer 5

Initiate specific so responses once hormones or other trigger molecules bind to them

Question 6

Electron a transfer proteins

Answer 6

Move electrons from one molecule to another