Cell Membrane

Question 0

Selectively permeable on

Answer 0

Size and charge

Question 1

Cell membrane

Answer 1

Called fluid mosaic. Made of 60% protein and 40% lipid

Question 2

Amphipathic

Answer 2

Has areas that repel water and areas that don’t (has polar and non-polar molecules)

Question 3

Hydrophilic lipid heads

Answer 3

Tolerate water. Impermeable to all solutes except oxygen and carbon dioxide

Question 4

Hydrophobic hydrocarbon tails

Answer 4

Made if hydrocarbons, repel water, and prevent leakage

Question 5

Embedded cholesterol molecules

Answer 5

Stabilize membrane fluidity

Question 6

Integral proteins

Answer 6

Hydrophilic, alpha helixes, channels where solutes pass in and out of cells

Question 7

Aquaporins

Answer 7

Specialized to transport water

Question 8

Peripheral proteins

Answer 8

Anchor base of integral protein to maintain its alignment

Question 9

Membrane carbohydrates

Answer 9

The ECM
Glycolipids and glycoproteins.
MHC’s (major histocompatibility complex)
“Braille” code on surface of every cell

Question 10

Membrane carbs important for

Answer 10

• Cell to cell recognition
• Read wbc’s
• receptor proteins that attach for important goods and messages
• Read by hormones
• ID the cell (type 2 glycoprotein)