What is the function of structure E (cholesterol)?

a) transport across the plasma membrane
b) detection of environmental change
c) stabilization of the phospholipids
d) cell-cell communication
e) structural support of the cell

c) Stabilization of the phospholipids
Identify Structure D

a) protein
b) glycoprotein
c) cholesterol
d) extracellular matrix
e) phospholipid bilayer of membrane

e) Phospholipid bilayer of membrane
Identify structure A

a) protein
b) extracellular matrix
c) cholesterol
d) glycoprotein
e) phospholipid

Glycoprotein
Which of the following best describes the structure of a biological membrane?

a) two layers of phospholipids with proteins embedded between the two layers
b) two layers of phospholipids with proteins either crossing the layers or on the surface of the layers
c) two layers of phospholipids (with opposite orientations of the phospholipids in each layer) with each layer covered on the outside with proteins
d) a mixture of covalently linked phospholipids and proteins that determines which solutes can cross the membrane and which cannot
e) a fluid structure in which phospholipids and proteins move freely between sides of the membrane

b) two layers of phospholipids with proteins either crossing the layers or on the surface of the layers
x

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