Sections
Lipids
Fatty Acids
Fatty Acid Nomenclature
Omega-3 Fatty Acids
Triacylglycerols
Glycerophospholipids
Sphingolipids
Sphingophospholipids
Sphingoglycolipids
Sphingolipid Recap
Waxes
Eicosanoids
Isoprenoids
Steroids
Steroid Hormones
Lipid Vitamins
Comprehensive Final Map
Biological Membranes
Physical Properties of Biological Membranes
Types of Membrane Proteins
Integral Membrane Proteins
Peripheral Membrane Proteins
Lipid-Linked Membrane Proteins

Concept #2: Cholesterol: our Most Abundant Steroid

Practice: Which of the following structures is a sterol?

A) A.

B) B.

C) C.

D) D.

Concept #3: Membrane Functions of Cholesterol

Practice: Cholesterol is essential for normal membrane functions because it:

A) Cannot be made by higher organisms, like mammals.

B) Spans the thickness of the entire bilayer.

C) Helps regulate membrane fluidity.

D) Catalyzes protein synthesis outside of the cell.

E) Plugs up the cardiac arteries of older men.

Practice: What is the effect of cholesterol in a membrane?

A) Increases membrane fluidity by preventing acyl chain packing.

B) Reduces membrane fluidity acyl chain movement.

D) Both a & b.

E) Neither a or b.