Lab

  1. If I use the 10x eyepiece and the 40x objective, what is the magnification?

    1. 400 diameters

  2. You are looking up information for your lab report. Which of the following options below is the most reliable website to use?

    1. Website published/updated within the last month

  3. Stains combine with what to increase contrast of cells under the microscope?

    1. Low power stage all the way up

  4. Sudan III is an indicator for… 

    1. Fat

  5. It’s not a big deal if your diet is deficient in one or more of the four major macromolecules.

    1. False

  6. An independent variable is…

    1. Factor being manipulated

  7. You are looking up information for your lab report. Which of the following options below is the most reliable website to use?

    1. Website published/updated within the last month

  8. A standardized variable is…

    1. variable held constant during an experiment

  9. If I use the 10x eyepiece and the 40x objective, what is the magnification?

    1. 400 diameters

  10. When you begin to focus the microscope, which combination below is correct?

    1. Low power, stage all the way down

  11. Benedict's Reagent is an indicator for the presence of…

    1. Sugar

  12. Lugol's Solution is an indicator for the presence of…

    1. Starch

  13. Given the equation to calculate enzyme activity rate using the following terms: number of seconds, final absorbance reading, initial absorbance reading

    1. final absorbance reading - initial absorbance reading / number of seconds

  14. The function of peroxidase is to turn hydrogen peroxide into…

    1. water and oxygen

  15. What is the source of the enzyme peroxidase in lab this week?

    1. Turnip

  16. What part of the graph do you use to calculate enzyme activity?

    1. Only the linear portion

  17. Enzyme activity should be calculated from…

    1. The linear portion of the line

  18. What program will we use to graph our data?

    1. Excel

  19. What product of the yeast and carbohydrate reaction was actually measured in the metabolism lab?

    1. Carbon dioxide

  20. Why might the tube containing only yeast culture and water produce gas?

    1. the yeast culture contained residual sugar

  21. Starch had the most potential energy of the carbohydrates tested in the yeast metabolism lab. What is the best explanation for why it should not produce the most gas?

    1. the yeast did not possess the proper enzymes to digest starch

  22. We made the leaf disks sink by pulling out the air and replacing it with water. What made the leaf disks float again?

    1. Photosynthesis creates oxygen, which makes the leaf disks float again

  23. Why do leaf disks normally float in water?

    1. Full of air

  24. The organism used in the Metabolism lab converts sugars into _____ in the presence of oxygen.

    1. Carbon dioxide

  25. What is the relationship between variance and standard deviation?

    1. standard deviation is the square root of the variance

  26. Stage of mitosis in which the kinetochore microtubules appear and connect the kinetochores  to the poles.

    1. Prometaphase

  27. Stage of meiosis I in which the homologous pairs line up on the equatorial plate.

    1. Metaphase I

  28. Stage of meiosis I in which the chromatin begins to condense following interphase.

    1. Early prophase 

  29. Stage of mitosis in which the nucleus replicates its DNA and centromeres.

    1. Interphase

  30. Stage of mitosis in which the chromatin condenses into visible chromosomes.

    1. Prophase

  31. In osmosis, water moves from a _____ concentration to a _____ lower concentration.

    1. higher, lower

  32. If  a cell crenates, it

    1. Shrinks

  33. In a hypotonic solution, a cell will…

    1. Swell

  34. In diffusion, substances move from a _____ concentration to a _____ concentration.

    1. Higher; Lower

  35. In an isotonic solution, a cell will…

    1. Stay the same

  36. Which pigment is NOT an accessory pigment?

    1. Chlorophyll A

  37. What is the primary photosynthetic pigment for higher plants?

    1. Chlorophyll A

  38. Cyanobacteria use which pigment?

    1. Chlorophyll A

  39. Cyanobacteria are prokaryotes so they DO have chloroplasts.

    1. False

  40. In class, you will be preparing pigment from which plant?

    1. Spinach

  41. What part of a phospholipid is hydrophobic?

    1. Tails

  42. KOW is an estimate of chemical partitioning between water and…

    1. Octanol

  43. The 2 treatments in the membrane lab are…

    1. Temperature and organic solvents

  44. What part of a phospholipid is hydrophilic?

    1. Head

  45. What pigment will we/did we examine in lab?

    1. Betacyanin

  46. What causes molecules to separate during electrophoresis?

    1. Electrical current traveling to negative electrode

  47. RNA and DNA carry a . . .

    1. Negative charge

  48. Samples should be loaded into . . 

    1. The wells

  49. What causes molecules to separate during electrophoresis?

    1. Electrical current traveling to negative electrode

  50. RNA and DNA carry a . . .

    1. Negative charge

  51. Complementary base pairing in DNA pairs guanine (G) with…

    1. Cytosine ©

  52. What can cause major change in the protein a sequence of DNA codes for? 

    1. Mutations

  53. Changes in the DNA sequence for a protein may be which of the following?

    1. Good

    2. Bad

    3. Nothing at all

    4. Any listed above

  54. translation is the process of…

    1. Making proteins

  55. What is an insertion or deletion mutation?

    1. a change in a single DNA base pair and the amino acids produced changes

  56. The ability to taste PTC is a dominant genetic trait.

    1. True

  57. How was the differential ability to taste PTC discovered?

    1. A lab accident

  58. Papillae are visible to the naked eye.

    1. True