biology

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Author:
stylishstylist
ID:
50644
Filename:
biology
Updated:
2010-11-19 17:59:59
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Lab Exam
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Lab Exam
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  1. How do you calculate the total magnification?
    • ocular lens X objective lens
    • (ocular lens is always 10)
  2. How do you calculate the working distance of a microscope?
    The distance between the objective lens and slide. Use a ruler to measure
  3. How do you estimate the diameter of the field of view in a microscope?
    slide a ruler under the objective lens and count the tics through the lens
  4. How is the Benedict's reagent used to test for reducing sugars? What does a positive test look like?
    is blue in color and when it reacts with a reducing sugar it turns orange
  5. How is iodine used to test for starch? What does a positive test look like?
    mix iodine with the sample, turns dark blue/black in color
  6. How does detergeant react with fats to mix fats in water?
    able to mix w/ fats and water - mixes with each other
  7. How is a paper test used to distinguis between water and lipids?
    • drop of water on paper - goes into paper
    • drop of oil on paper - sits on top of paper
  8. What is denaturation of protein?
    3d structure is broken down
  9. How do you generate a wet mount slide of your cheek cells?
    • put your check cells onto slide
    • add a drop of something wet (water, stain)
    • put a cover slip on
  10. What is this stage
    Prophase
  11. What is this stage
    Metaphase
  12. What is this stage
    anaphase
  13. What is this stage
    telophase
  14. Which cells undergo mitosis?
    body cells
  15. Which cells undergo meiosis?
    reproductive cells
  16. What are dominant traits?
    dont skip generations
  17. What are recessive traits?
    skip generations
  18. Are dominant traits always more frequent in the population that recessive traits?
    No
  19. What is the phenotype ratio for a cross of 2 heterozygous individuals?
    3 dominant to 1 recessive 3:1
  20. How are antibodies used in blood typing experiments?
    • antibodies will clump together
    • will attach to any blood cells it can
  21. What do positive and negative blood typing results look like?
    • positive - clump together
    • negative - nothing
  22. What type of tissue is this?
    cuboidal epithelium
  23. What type of tissue is this?
    columnar epithelium
  24. What type of tissue is this?
    squamous epithelium
  25. What type of tissue is this?
    hyaline cartilage
  26. What type of tissue is this?
    bone tissue
  27. What type of tissue is this?
    skeletal muscle tissue
  28. What type of tissue is this?
    nerve tissue
  29. What is the location of the foramen magnum in the skull?
    bottom of skull
  30. What makes up the axial skeleton?
    • middle of body
    • skull, spine, ribs
  31. What makes up the appendicular skeleton?
    arms and legs
  32. How do you measure pulse rate?
    how many beats per minute ( in pulse, neck)
  33. How do you measure blood pressure?
    blood pressure cuff
  34. How do you hear heart sounds?
    a stethoscope
  35. How do you use a respirometer to measure vital capicity?
    • set it at 0
    • blow into as hard as you can all at once

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