Chapter 9, Problem 19E

(a)

Summary Introduction

To determine: Whether the lipid samples 20% phosphatidylcholine, 15% phosphatidylserine, and 65% other lipids correspond to the inner or outer leaflet of a eukaryotic plasma membrane.

Concept introduction: Cell membrane is also called as the plasma membrane. The eukaryotic plasma membrane is a double layer membrane that is made up of lipids. It separates the cell’s interior from the outside environment. The cell membrane protects the cells from the surroundings. Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the major phospholipids present in the plasma membrane.

(b)

Summary Introduction

To determine: Whether the lipid samples 35% phosphatidylcholine, 15% gangliosides, 5% cholesterol, and 45% other lipids correspond to the inner or outer leaflet of a eukaryotic plasma membrane.

Concept introduction: Cell membrane is also called as the plasma membrane. The eukaryotic plasma membrane is a double layer membrane that is made up of lipids. It separates the cell’s interior from the outside environment. The cell membrane protects the cells from the surroundings. Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the major phospholipids present in the plasma membrane.