Chapter 20, Problem 3E

(a)

Summary Introduction

To determine: The charge of bile acids in the small intestine where the pH is 7-8.

Concept introduction: Bile acids are the steroid acids present in the bile. They are found in the bile of mammals and other vertebrates. Bile acid plays an important part in digestion and absorption of fats and the fat-soluble vitamins in the small intestine. Bile acids having different molecular forms can be produced in the liver by different species.

(b)

Summary Introduction

To explain: The mechanism for the bactericidal activity of bile acids in the small intestine.

Concept introduction: Bile acids are the steroid acids present in the bile. They are found in the bile of mammals and other vertebrates. Bile acid plays an important part in the digestion and absorption of fats and the fat-soluble vitamins in the small intestine. Bile acids having different molecular forms can be produced in the liver by different species.