membranes

Question 1

what does cholesterol do to the membrane

Answer 1

cholesterol sits between the phospholipids an increase of cholesterol causes the phospholipids to pack closer together making the membrane more rigid

Question 2

what can be found in the membrane

Answer 2

channel proteins
carrier proteins
glycoproteins
glycolipids

Question 3

what is the affect of temp above 45 degrees on the membrane

Answer 3

increase in temp causes the channel proteins and molecules to expand and deform causing increase in permeability

Question 4

give one reason why a low density lipoprotien can diffuse through cell surface membrane

Answer 4

low density lipoprotien is a lipid soluable molecule meaning it can easily diffuse through the phospholipid bilayer