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 enzymehydrolyzes lactose?a. glucose and fructoseb. galactose and maltosec. glucose and galactosed. glucose and maltose2. Geneticists studying the gene for lactase did not find any differences in the codingregion DNA (the section of DNA with instructions to make the protein) betweenpeople who could digest lactose and people who could not digest lactose. After theyinvestigated further, they discovered that the difference between lactose tolerant andintolerant individuals was due to a mutation located ina. the genetic switch for the lactase geneb. an intron of the lactase genec. the gene for glucose productiond. different genes for different individuals3. 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 lifeand 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 modernmedicine. 4. Which discovery supports the hypothesis that evolution of the lactase persistencetrait 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 persistencemutations.c. Most human cultures today drink milk and most people worldwide are lactasepersistent.d. Scientists have identified different mutations that cause lactase persistence.5. Why would measuring blood glucose levels in an individual, 20 to 30 minutes afterthey 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 thebody start releasing glucose into the bloodstream.b. When lactose is digested by lactase, the glucose that is produced enters thebloodstream from the small intestine.c. When lactose enters the large intestine, glucose is digested by bacteria and thenenters the bloodstream.d. The fats and proteins in milk are digested by the body, causing glucose levels inthe blood to increase.6. What would be the effect of a mutation in the coding region of the lactase gene?|

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Answered: 1. What two monosaccharides (simpler…

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)

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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