Lactose is a disaccharide of glucose and galactose, and its digestion requires the actions of the enzyme lactase. If lactose is eaten as part of the diet but is not digested by lactase, this sugar is then metabolized by bacteria in the intestine, leading to the symptoms of lactose intolerance. Lactose intolerance, therefore, results from a(n)
A) lack of hydrolysis of lactose.
B) low blood lactose level.
C) lack of dehydration synthesis of lactose.
D) inability of the body to produce lactose.

Question

Quizplus · Accepted Answer

Lactose intolerance results from the lack of hydrolysis of lactose due to insufficient levels of the enzyme lactase, leading to undigested lactose being metabolized by intestinal bacteria.

Lactose Is a Disaccharide of Glucose and Galactose, and Its