Homework Help is Here – Start Your Trial Now!
Science
Biology
1. What two monosaccharides (simpler sugars) are formed when the lactase enzyme hydrolyzes lactose? a. glucose and fructose b. galactose and maltose c. glucose and galactose d. glucose and maltose

1. What two monosaccharides (simpler sugars) are formed when the lactase enzyme hydrolyzes lactose? a. glucose and fructose b. galactose and maltose c. glucose and galactose d. glucose and maltose

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,...
See similar textbooks
icon
Related questions
Question

Can someone help me answer non-graded bio questions pertaining to lactase I'm trying to understand it more.

1. What two monosaccharides (simpler sugars) are formed when the lactase enzyme hydrolyzes lactose? a. glucose and fructose b. galactose and maltose c. glucose and galactose d. glucose and maltose 2. Geneticists studying the gene for lactase did not find any differences in the coding region DNA (the section of DNA with instructions to make the protein) between people who could digest lactose and people who could not digest lactose. After they investigated further, they discovered that the difference between lactose tolerant and intolerant individuals was due to a mutation located in a. the genetic switch for the lactase gene b. an intron of the lactase gene c. the gene for glucose production d. different genes for different individuals 3. Which statement accurately describes human evolution? | a. Human evolution ended 200,000 years ago when humans (Homo sapiens) became a distinct species. b. Humans continued to evolve until the species adapted to a pastoralist way of life and then stopped evolving. c. Humans are still evolving and will continue to evolve through natural selection. d. Human evolution through natural selection ended with the advent of modern medicine.
Transcribed Image Text:1. What two monosaccharides (simpler sugars) are formed when the lactase enzyme hydrolyzes lactose? a. glucose and fructose b. galactose and maltose c. glucose and galactose d. glucose and maltose 2. Geneticists studying the gene for lactase did not find any differences in the coding region DNA (the section of DNA with instructions to make the protein) between people who could digest lactose and people who could not digest lactose. After they investigated further, they discovered that the difference between lactose tolerant and intolerant individuals was due to a mutation located in a. the genetic switch for the lactase gene b. an intron of the lactase gene c. the gene for glucose production d. different genes for different individuals 3. Which statement accurately describes human evolution? | a. Human evolution ended 200,000 years ago when humans (Homo sapiens) became a distinct species. b. Humans continued to evolve until the species adapted to a pastoralist way of life and then stopped evolving. c. Humans are still evolving and will continue to evolve through natural selection. d. Human evolution through natural selection ended with the advent of modern medicine.
4. Which discovery supports the hypothesis that evolution of the lactase persistence trait was driven by the use of milk in pastoralist cultures? a. The lactase gene is present both in humans and in domesticated animals. b. Ancient pots used to hold milk are about the same age as the lactase persistence mutations. c. Most human cultures today drink milk and most people worldwide are lactase persistent. d. Scientists have identified different mutations that cause lactase persistence. 5. Why would measuring blood glucose levels in an individual, 20 to 30 minutes after they drink a liter of milk, indicate whether they are able to digest lactose. a. When lactose is digested by lactase in the small intestine, different cells in the body start releasing glucose into the bloodstream. b. When lactose is digested by lactase, the glucose that is produced enters the bloodstream from the small intestine. c. When lactose enters the large intestine, glucose is digested by bacteria and then enters the bloodstream. d. The fats and proteins in milk are digested by the body, causing glucose levels in the blood to increase. 6. What would be the effect of a mutation in the coding region of the lactase gene?|
Transcribed Image Text:4. Which discovery supports the hypothesis that evolution of the lactase persistence trait was driven by the use of milk in pastoralist cultures? a. The lactase gene is present both in humans and in domesticated animals. b. Ancient pots used to hold milk are about the same age as the lactase persistence mutations. c. Most human cultures today drink milk and most people worldwide are lactase persistent. d. Scientists have identified different mutations that cause lactase persistence. 5. Why would measuring blood glucose levels in an individual, 20 to 30 minutes after they drink a liter of milk, indicate whether they are able to digest lactose. a. When lactose is digested by lactase in the small intestine, different cells in the body start releasing glucose into the bloodstream. b. When lactose is digested by lactase, the glucose that is produced enters the bloodstream from the small intestine. c. When lactose enters the large intestine, glucose is digested by bacteria and then enters the bloodstream. d. The fats and proteins in milk are digested by the body, causing glucose levels in the blood to increase. 6. What would be the effect of a mutation in the coding region of the lactase gene?|
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education
SEE MORE TEXTBOOKS