Biology Test 2

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Biology Test 2
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2010-09-25 04:47:43
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Biology Test 2
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  1. 1.Light microscopes produce images of only dead organisms.

    a.True
    b.False
    b. False
  2. 2.In which microscope does light pass through glass lenses to produce an image?

    A.Light microscope
    B.Transmission microscope
    C.Scanning microscope
    D.Electron microscope
    A. Light microscope
    (this multiple choice question has been scrambled)
  3. 3.Which microscope produces 3 dimensional images of the surface of a cell?

    A.Light microscope
    B.Electron microscope
    C.Transmission microscope
    D.Scanning microscope
    D. Scanning microscope
    (this multiple choice question has been scrambled)
  4. 4.The cell wall of a prokaryotic cell is

    a.Rigid
    b.Outside the plasma membrane
    c.Protects the cell from the environment
    d.Helps maintain the shape of the cell
    e.All the above
    e.All the above
  5. 5._______________ are short projections on the surface of the prokaryotic cell which serve in adherence.

    A.Cilia
    B.Flagella
    C.Pili
    d.None of the above
    C.Pili
    (this multiple choice question has been scrambled)
  6. 6.All activities of the eukaryotic cell are controlled in the

    A.Nucleus
    B.Golgi apparatus
    C.Mitochondria
    D.Endoplasmic reticulum
    A.Nucleus
    (this multiple choice question has been scrambled)
  7. 7.The nuclear envelope of the cell

    a.Has a double membrane
    b.Is perforated with pores
    c.Controls what material flows in and out of the nucleus
    d.All the above
    d.All the above
  8. 8.Ribosomes are produced in the nucleolus.

    a.True
    b.False
    a.True
  9. 9.The “suicide capsules” of the cell are the

    A.Contractile vacuole
    B.Lysosomes
    C.Ribosomes
    D.Centrioles
    B.Lysosomes
    (this multiple choice question has been scrambled)
  10. 10.Cellular respiration occurs in the

    A.Smooth ER
    B.Mitochondria
    C.Rough ER
    D.Centrioles
    B.Mitochondria
    (this multiple choice question has been scrambled)
  11. 11. All the following are organelles found only in plants EXCEPT

    A. Amyloplast
    B. Cell wall
    C. Cholorplast
    D. Contractile vacuole
    D. Contractile vacuole
    (this multiple choice question has been scrambled)
  12. 12. The __________________ of the cytoskeleton is made up of fibrous protein.

    A. Intermediate filaments
    B. Microtubules
    C. Microfilaments
    A. Intermediate filaments
    (this multiple choice question has been scrambled)
  13. 13. Cells vary in size.

    a. True
    b. False
    a. True
  14. 14. The size of the cell is not related to its function.

    a. True
    b. False
    b. False
  15. 15. Small cells have a ________ surface to volume ratio.

    a. Large
    b. Small
    a. Large
  16. 16. All cells have

    a. Plasma membrane
    b. Ribosomes
    c. DNA
    d. All the above
    d. All the above
  17. 17. _____________ is a disease caused by the buildup of lipids in the central nervous system.

    a. Tay Sachs
    b. Pompi’s
    a. Tay Sachs
  18. 18. Plasma membranes are selectively permeable allowing some substances to move easily across the membrane while others cannot.

    a. True
    b. False
    a. True
  19. 19. The plasma membrane is represented as a “Fluid Mosaic” model. The mosaic portion refers to the

    A. Phospholipid bilayer
    B. Cholesterol
    C. Phosphate heads of the bilayer
    D. Proteins that are embedded in the membrane
    D. Proteins that are embedded in the membrane
    (this multiple choice question has been scrambled)
  20. 20. Cholesterol in the plasma membrane acts as a “temperature buffer” for the membrane.

    a. True
    b. False
    a. True
  21. 21. The membrane remains fluid in lower temperature if it is rich in phospholipids with

    A. Only b and c
    B. Only a and c
    C. Unsaturated hydrocarbon tails
    D. Saturated hydrocarbon tails
    E. “Kinked” phospholipids
    B. Only a and c
    (this multiple choice question has been scrambled)
  22. 22. Diffusion occurs across a membrane from an area of _______ concentration, to an area of _________ concentration.

    A. Low, high
    B. Neither, diffusion is a state of equilibrium.
    C. High, low
    C. High, low
    (this multiple choice question has been scrambled)
  23. 23. A type of molecule that diffuses easily across a membrane is

    a. Oxygen
    b. Carbon dioxide
    c. Lipids
    d. Water
    e. All of the above
    e. All of the above
  24. 24. Osmosis is the diffusion of ___________ across a membrane.

    A. Lipids
    B. Oxygen
    C. Water
    D. Non-polar molecules
    C. Water
    (this multiple choice question has been scrambled)
  25. 25. Hypertonic solutions refer to solutions that have

    A. The same amount of solutes and water.
    B. Less solutes, more water
    C. More solutes, less water
    C. More solutes, less water
    (this multiple choice question has been scrambled)
  26. 26. An animal cell placed in a hypotonic solution will

    A. Shrivel
    B. Lyses
    C. Become turgid
    D. Become flaccid
    E. Plasmolyze
    B. Lyses
    (this multiple choice question has been scrambled)
  27. 27. A plant cell in a hypotonic solution will

    A. Lysed
    B. Become turgid
    C. Shrivel
    D. Become flaccid
    E. Plasmolyze
    B. Become turgid
    (this multiple choice question has been scrambled)
  28. 28. The uptake of fluids into a cell is called

    A. Pinocytosis
    B. Exocytosis
    C. Phagocytosis
    D. Receptor-mediated endocytosis
    A. Pinocytosis
    (this multiple choice question has been scrambled)
  29. 29. Photosynthesis is a series of what type of reactions?

    A. Potential
    B. Endergonic
    C. Kenitic
    D. Exergonic
    B. Endergonic
    (this multiple choice question has been scrambled)
  30. 30. Active transport is the movement of molecules up the concentration gradient.

    a. True
    b. False
    a. True
  31. 31. The composition of an ATP nucleotide consists of the following EXCEPT

    A. Three phosphate groups
    B. Ribose
    C. Nitrogenous base Thymine
    D. Nitrogenous base Adenine
    C. Nitrogenous base Thymine
    (this multiple choice question has been scrambled)
  32. 32. An enzyme has a specific reactant called the

    A. Active site
    B. Catalyst
    C. Substrate
    D. Product
    C. Substrate
    (this multiple choice question has been scrambled)
  33. 33. Which of the following is an enzyme.

    A. Sucrase
    B. Glucose
    C. Sucrose
    D. Fructose
    A. Sucrase
    (this multiple choice question has been scrambled)
  34. 34. Binding (an induced fit) causes the enzyme to change slightly.

    a. True
    b. False
    a. True
  35. 35. Some of the enzyme is used up in the reaction.

    a. True
    b. False
    b. False
  36. 36. Which of following can denature an enzyme?

    a. Temperature change
    b. Change in pH
    c. Salt concentration
    d. All the above
    e. None of the above
    d. All the above
  37. 37. A non-competitive enzyme inhibitor

    A. Does not bind to the active site of the enzyme
    B. Both a and b
    C. Binds to the active site of the enzyme so the substrate cannot bind to it
    D. Changes the shape of the enzyme so the substrate cannot bind to it
    E. Both b and c
    E. Both b and c
    (this multiple choice question has been scrambled)
  38. 38. __________________ are small pores in the epidermis of a leaf that allow CO2 and O to enter and leave the leaf.

    A. Stomata
    B. Palisade mesophyll
    C. Spongy mesophyll
    d. None of the above; all refer to the layers of the epidermis
    A. Stomata
    (this multiple choice question has been scrambled)
  39. 39. The most abundant photosynthetic pigment

    A. Chlorophyll b
    B. Anthocyanin
    C. Chlorophyll a
    D. Xanthophyll
    E. Carotenoid
    C. Chlorophyll a
    (this multiple choice question has been scrambled)
  40. 40. In the photosynthetic process which of the following is activated first?

    A. Photosystem II
    B. Electron transport chain
    C. Photosystem I
    A. Photosystem II
    (this multiple choice question has been scrambled)
  41. 41. Photosystem II contains chlorophyll a _____

    a. P700
    b. P680
    b. P680
  42. 42. A Photosystem consists of a

    a. Light harvesting complex
    b. Reaction center
    c. Primary electron acceptor
    d. All the above
    d. All the above
  43. 43. The chemical energy produced by photosynthesis is

    A. ADP
    B. NADPH
    C. ATP
    D. Both a and b
    E. Both a and c
    E. Both a and c
    (this multiple choice question has been scrambled)
  44. 44. The light reactions of photosynthesis convert solar energy into chemical energy.

    a. True
    b. False
    a. True
  45. 45. The Calvin Cycle converts CO2 into O2.

    a. True
    b. False
    b. False
  46. 46. The Calvin Cycle occurs in the

    A. Grana
    B. Thylakoid membrane
    C. Stomata
    D. Stroma
    D. Stroma
    (this multiple choice question has been scrambled)
  47. 47. The Calvin Cycle produces

    A.NADPH
    B.Glucose
    C.ATP
    D.Oxygen
    B.Glucose
    (this multiple choice question has been scrambled)

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