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symptoms would you expect a lactose intolerant person to experience after ingesting a milkshake

symptoms would you expect a lactose intolerant person to experience after ingesting a milkshake

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A. What symptoms would you expect a lactose intolerant person to experience after ingesting a milkshake.

B. Dairy foods are a good source of calcium, protein, vitamin A vitamin B12 and riboflavin. Lactose intolerant adults are usually able to consume some dairy products. Nameonedairy products and explain why/howa lactose intolerant person may safely consume thisproduct.

Adult lactose tolerance is determined by simple dominant-recessive inheritance, where the gene for lactose tolerance (L) is dominant and lactase non-persistence (1) is recessive Complete the following Punnet square. Female Male
Transcribed Image Text:Adult lactose tolerance is determined by simple dominant-recessive inheritance, where the gene for lactose tolerance (L) is dominant and lactase non-persistence (1) is recessive Complete the following Punnet square. Female Male
Milk and other dairy products contain a sugar (a disaccharide) called lactose. In the presence of an enzyme (lactase) in the small intestine, it is broken down into smaller components, which can then be absorbed through the intestinal wall and hence used in the body. This ability to digest (break down) lactose is virtually universal in young mammals, including humans, but lost as mammals age. This loss of lactase action, accompanied by an inability to digest lactose, is known as 'lactose intolerance", primary lactase deficiency' or 'lactose non-persistence". While about 65-75% of adults in the world are lactose intolerant, the prevalence varies considerably. Lactose intolerance is common in people of Asian, West African, Arab, Jewish, Greek and Italian descent, but very low in people of Northern European descent. Interpolated map of the percentage of adults that can digest lactose in the indigenous population of the Old World (Roe, 2017). The ability to digest lactose as an adult (lactose persistence), is derived from mutations on chromosome 2, which is thought to have occurred approximately 3 000 – 7 000 years ago. Development of this mutation, allowing adults to digest milk, is thought to have conferred an evolutionary advantage to dairy farmers during poor seasons.
Transcribed Image Text:Milk and other dairy products contain a sugar (a disaccharide) called lactose. In the presence of an enzyme (lactase) in the small intestine, it is broken down into smaller components, which can then be absorbed through the intestinal wall and hence used in the body. This ability to digest (break down) lactose is virtually universal in young mammals, including humans, but lost as mammals age. This loss of lactase action, accompanied by an inability to digest lactose, is known as 'lactose intolerance", primary lactase deficiency' or 'lactose non-persistence". While about 65-75% of adults in the world are lactose intolerant, the prevalence varies considerably. Lactose intolerance is common in people of Asian, West African, Arab, Jewish, Greek and Italian descent, but very low in people of Northern European descent. Interpolated map of the percentage of adults that can digest lactose in the indigenous population of the Old World (Roe, 2017). The ability to digest lactose as an adult (lactose persistence), is derived from mutations on chromosome 2, which is thought to have occurred approximately 3 000 – 7 000 years ago. Development of this mutation, allowing adults to digest milk, is thought to have conferred an evolutionary advantage to dairy farmers during poor seasons.
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