Lab Practical II

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Nay0388
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149417
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Lab Practical II
Updated:
2012-04-23 00:46:08
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Lab Practical II
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  1. Which tube was the control?
    Tube "C"
  2. If the gel contained freash pineapple would it solidify?

    *Enzyme activly working...
    *Enzyme not activly working...

    (Denatured-)
    No, b/c the enzyme functions in breaking down gel, thus preventing solidification.

    • *Gel Liquid
    • *Gel Solid

    (Destroyed)
  3. If the gel contained heated pineapple would it solidify?
    Yes, b/c heat denatures enzyme
  4. If the pH of the pineapple is approximately 2-3 (acidic) would it solidify if exposed to lemon juice?
    No, b/c the enzyme is still active
  5. If the pH of the pineapple is approximately 2-3 would if solidify if exposed to KOH (has a pH of 13)
    Yes, b/c the enzyme doesn't like that pH.

    Increase basic denatures the enzyme
  6. What environmental factors inhibited enzyme activity in lab?
    Heat, Metal, Base (KOH), and Salt (Canned)
  7. What are the reactants and products of photosynthesis?

    Write the equation.
    • 6CO2 + 6H2O + Energy (Reactants)
    • C6H12O6 + 6O2 (Products)

    6CO2 + 6H2O+ Energy---> C6H12O6 + 6O2
  8. What was the role of sodium bicarbonate in this experiment?
    Carbon Dioxide CO2
  9. What effect would moving the light source closer to the plant have on photosynthetic activity?
    Increases
  10. What did the movement of the dye indicate?
    Oxygen production
  11. What parameter indicated rate of photosynthetic activity?
    Oxygen production
  12. How does temperature affect the rate of photosynthesis>
    Increase temperature increase photosynthesis
  13. What are the reactant and products of aerobic cell respiration?

    Write the equation.
    • C6H12O6 + 6O2 (Reactant)
    • 6H2O+ 6CO2 + 36 ATP + Heat (Products)

    C6H12O6 + 6O2---> 6H2O+ 6CO2 + 36 ATP + Heat
  14. What are the reactants and products of anaerobic cell respiration?

    Write the equation.
    • C6H12O6 (Reactant)
    • 2C2H5OH + 2CO2 +2 ATP + Heat (Product)

    C6H12O6---> 2C2H5OH + 2CO2 +2 ATP + Heat
  15. If heat is given off during every chemical reaction, what did the increasing temperature tell us about chemical activity between the two thermoses?
    The increase in temperature with yeast indicated alcohol fermintation activity (No fermintation in other)
  16. Which thermos was supposed to show a greater temperature?
    With yeast
  17. If yeast run out of sugar to metabolize, what would happend to the temperature?
    Drops
  18. What was the source of energy (nutrient) for the yeast cell?
    The grape juice (Sugar)
  19. The thermoses were stopped in order to provide the yeast with an anaerobic environment. Considering the products of anaerobic cell respiration, what caused the bubbles in the calcium hydroxide solution?
    Carbon Dioxide
  20. A precipitate is a solid mass that is formed. What caused the precipitate to form in the calcium hydroxide solution?
    Calcium Carbonate (White stuff)
  21. What is the difference during cytokinesis of plant and animal cells?
    • Plant--> Cell plate
    • Animal--> Cleavage furrow
  22. In which part of the cell cycle do cells remain in the longest?
    Interphase
  23. During interphase, DNA is in the form of chromatin or chromosomes?
    Chromatin
  24. What type of cell division produces haploid cells (2n-->n)
    Meiosis
  25. What type of cell division produces diploid cells (2n-->2n)
    Mitosis
  26. If there are 13 pairs of homologues in a parent cell, how many chromosomes are there in the sperm (or egg) cell that is produced?
    13 + 13 = 26

    13 Sperm/ 13 Egg
  27. If the parent cell has 24 chromosomes, how many does each daughter cell have if a body (somatic) cell is produced?
    24 somatic---> Identical
  28. Identify the nucleus, nucleolus, chromatin, chromosomes, spindle fibers, and cell plate.
  29. Identify interphase, prophase, metaphase, anaphase, telophase, and cytokinesis.
  30. Identify interphase, prophase, metaphase, anaphase, telophase, and cytokinesis.
  31. Identify the plant cell.
  32. Identify the centrioles, nucleolus, nucleus, chromatin, chromosomes, spindle fibers, and cleavage furrow
  33. Identify interphase, prophase, metaphase, anaphase, telophase, and cytokinesis
  34. Identify the animal cell.

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