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Warm-Up Write your homework get it stamped! Update your table of contents for today! Complete the Before column ONLY on the Anticipation Guide on the front ... – PowerPoint PPT presentation

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Title: Warm-Up

  • Warm-Up
  • Write your homework get it stamped!
  • Update your table of contents for today!
  • Complete the Before column ONLY on the
    Anticipation Guide on the front counter and tape
    it on to page 14!

Date Session Activity Page
1/22 1/26 7 Anticipation Guide Background Notes 14
MilkHow Sweet Is It? Lab Guide 15

  • Warm-Up
  • What were your answers on the Anticipation
  • What do you think coevolution is?
  • Starting with the next slide, whatever is in
    black are the notes you should be writing!

  • Coevolution
  • Coevolution when 2 (or more) organisms or
    things affect each others evolution/evolve
    together dependent on each other

  • Lactose Vs. Lactase Notes
  • Lactose a sugar found only in milk
  • Lactase an enzyme found in the lining of the
    small intestine that breaks lactose down into
    glucose, which can be digested by the body
  • Just FYI
  • Enzyme a substance produced by a living
    organism that acts as a catalyst to bring about a
    specific biochemical reaction

  • Lactose Vs. Lactase
  • What does lactose intolerance mean?
  • So what do you think lactase persistence means?
  • These are genetic characteristicsso, do you
    think that it is more likely for people to be
    lactose intolerant or lactase persistent?

The Facts About Lactose IntoleranceRemember,
Milk has Sugar, Fats Proteins!
  • Lactose intolerant people cannot digest the
    sugar (lactose) in milk because they do not
    create enough of the lactase enzyme.
  • Because the milk races through the digestive
    system very little of the other nutrients (fats
    proteins) can be absorbed

Milk How Sweet Is It? Lab
  • Your group will have a sample of the intestinal
    fluid of a patient. You will test the fluid to
    determine if your patient has the gene for
    lactase persistence and is able to digest milk.
  • Follow the lab directions and share your data
    with the class by adding your data to the table
    on the board.
  • Answer the lab questions on your sheet.

Milk How Sweet Is It? Lab Roles
  • Group Leader reads all directions and keeps
    group on task reinforces the jobs of others
  • Supply Manager/Clean Up manages supplies
    cleans up after both parts of the lab are
  • Math Map Master does calculations is in
    charge of recording math map information
    (someone with a phone an agenda to use the map
    in the front of it)
  • Discussion Leader Leads the discussion of the
    questions to share information with the group and
    the class if required

Milk How Sweet Is It? Lab Results
  2 minutes
Samples Glucose levels (mg/dL) Lactose Intolerant or Lactase Persistent?
 Patient 1 (Japan)  
 Patient 2 (Kenya)  
 Patient 3 (China)  
 Patient 4 (Italy)  
 Patient 5 (Papua New Guinea)  
 Patient 6 (Finland)  
 Patient 7 (Saudi Arabia)  
 Patient 8 (Uganda)  
Global Distributionof theLactase Persistence
  • You will analyze the distribution of lactase
    persistence (ability to digest milk) across a
    large area of the world.
  • Calculate the frequency of lactase persistence
    for the 3-4 regions on your strip of paper.
  • For each region, you must put a sticker on the
    board. If the percentage is less than 40, place
    a pink sticker, if the percentage is equal to or
    greater than 40, place a green sticker.
  • 3. When you have the percentages calculated, send
    your Math Map Master to place the stickers on
    the correct country on the map on the board.

lactose intolerance
lactase persistence
  • 1. Create a key for the map on your answer sheet.
  • Green for lactase persistence (ability to digest
    milk 40)
  • Red for lactose intolerance (ability to digest
    milk lt 40)
  • 2. Using dots or shading, duplicate the class
    data on the map on your note guide.

Global Distribution of the Lactase Persistence
Answer the activity questions below the map on
your note sheet
Got Lactase? The Co-Evolution of Genes Culture
  • Got Lactase The Co-Evolution of Genes and
  • http//www.hhmi.org/biointeractive/making-fittest-
  • https//www.youtube.com/watch?vumiLaW5AmKgnoredi
  • During the video, answer the video questions 1-4
  • After the video, go back to the Anticipation
    Guide from your Warm-Up and fill out the After
    column, and then answer question 5.

Answer the reflection questions on the back of
the note guide by next class!
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