Chapter 7, Problem 1STP

Summary Introduction

To determine:

The number which represent the location where we can find water-insoluble substance.

Introduction:

The cell membrane is the outer membrane of most of the organism’s cells and it separate the outer environment from the inner components of the cell.

Answer to Problem 1STP

Location where we can find water-insoluble substance is represented by number 2.

Explanation of Solution

The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules.

Lipids are arranged within the membrane with the polar head towards outer sides and the hydrophobic tails towards the inner part. This ensures the non-polar tail of saturated hydrocarbons is protected from the outer aqueous environment. The lipid component of the membrane mainly composed of phosphoglycerides.