Biotechnology Virtual Lab


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Explore the relationship between the independent and dependent variables in this BioTechnology Virtual Lab.

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Biotechnology Virtual Lab

  1. 1. TODAY IN SCIENCE <ul><li>YOU WILL NEED: </li></ul><ul><ul><li>Pencil, colored Pencils Or highlighters </li></ul></ul><ul><ul><li>1 sheet of lined paper – set up for Cornell Notes </li></ul></ul><ul><ul><li>Update Log #1 - Online </li></ul></ul>
  2. 2. ASSIGNMENT LOG #1 8/25 8/29 Mission Possible -Cooperative project 100/ 15   8/31 9/2 Tools of the Trade 145   9/1 9/1 Cooperative -Tool ID 15   9/2 9/9         Interactive Reader -Pgs 20-27 - Sidebars, Highlight Answer in text & #1-5 on pg. 27 65   9/6 9/9 BioTechnology Virtual Lab 160    
  3. 3. Topic: Biotechnology What is a European Corn Borer? <ul><ul><ul><ul><li>Name </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Date </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Period </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Class </li></ul></ul></ul></ul><ul><li>Major Corn Insect Pest </li></ul><ul><li>Female lay up to 600 eggs 4x a year </li></ul><ul><li>Egg, larva, pupa, moth </li></ul><ul><li>Larvae feed on leaf surfaces, stalks and bore into midribs </li></ul>
  4. 4. Corn Plant Growth <ul><li>Flowering, fruit-bearing grass plant </li></ul><ul><li>Seed weight = about .28 g </li></ul><ul><li>10 week growth = 7-10 feet or (2-3 meters) </li></ul><ul><li>Produce 500 to 1000 seeds </li></ul>stalk 1 ear of corn leaf root tassel
  5. 5. What do Plants need to GROW? What is their function? <ul><li>Macro and Micro nutrients from the soil </li></ul><ul><li>CO 2 </li></ul><ul><li>Oxygen </li></ul><ul><li>Sunlight </li></ul><ul><li>1) Carry out biochemical reaction of photosynthesis – water and CO 2 converted into Glucose (C 6 H 12 O 6 ) and O 2 </li></ul>
  6. 6. What is Bt corn and why create it? <ul><li>B acillus t huringiensis or Bt = soil bacterium -produces cry stalline proteins (Cry proteins) are poisons for specific insects </li></ul><ul><li>Inserted the Cry protein gene into corn plants’ DNA </li></ul><ul><li>Bt corn is protected by the toxin: larvae eat corn plant and die </li></ul>
  7. 7. Why create Bt corn? What are the problems? <ul><li>Protect Corn Yield </li></ul><ul><li>More corn to feed the growing population of humans and animals </li></ul><ul><li>Harmful to non-target insects (honeybees & butterflies) </li></ul><ul><li>Humans show allergic reaction to corn when eaten </li></ul>
  8. 8. What is Corn Yield? <ul><li>Amount of corn produced in a field </li></ul><ul><li>The # of kernels on an ear Corn plant normally produces 1 ear of corn per plant. </li></ul>
  9. 9. Independent and Dependent Variables Scientists use an experiment to search for cause and effect relationships in nature. In other words, they design an experiment so that changes to one item cause something else to change in a predictable way. These changing qualities are called variables . A variable is any factor, trait or condition that can exist in differing amounts or types . An experiment usually has three kinds of variables : independent, dependent and controlled.
  10. 10. The scientist focuses their observations on the dependent variable to see how it responds to the change made to the independent variable. The change of the dependent variable is caused by and depends on the value of the independent variable . Experiments also have controlled variables . Controlled variables are factors that a scientist wants to remain constant (the same), and they must observe them as carefully as the dependent variables. Controlled variables are used to compare the dependent variable’s changes in experiment’s relationship and keep the tests fair.
  11. 11. IDENTIFY INDEPENDENT & DEPENDENT VARIABLES <ul><li>Pick 2 colored pencils or highlighters </li></ul><ul><li>Underline Independent </li></ul><ul><li>Circle Dependent </li></ul>
  12. 15. HOMEWORK <ul><ul><ul><li>Remind Parents about Back to School Night Tomorrow </li></ul></ul></ul><ul><ul><ul><li>Complete a minimum of 3 pages in your IR tonight – due Friday at the beginning of class </li></ul></ul></ul><ul><ul><ul><li>We will be working in class on the Virtual Lab for the rest of the week . </li></ul></ul></ul>