Unit 2 Cell Biology Review

20 Questions | Total Attempts: 62

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Unit 2 Cell Biology Review

Questions and Answers
  • 1. 
    The enzyme invertase is usually found outside the cells of yeast. the enzyme also has 3 carbohydrates on it.  In a particular mutant strain, the carbohydrates are present, but the enzyme is found in the rough ER instead of outside the cell. This mutant  is defective in
    • A. 

      Transport from Rough ER to Smooth Er

    • B. 

      Transport from Golgi to the outer membrane

    • C. 

      Transport from the Rough ER to Golgi

    • D. 

      Transport from Rough ER to lysosomes

  • 2. 
    Glucose transporters are found in the outer membranes of yeast cells.  These proteins have a chain of 5 carbohydrates on them.  You have a mutant strain that, like the strain in question 19 has a transport problem. Like the strain in question 19, the protein stays in the Rough ER. However, this protein has 3 carbohydrates on it, not 5. From this data we can conclude
    • A. 

      The additional 2 carbohydrates are normally put on in the Golgi

    • B. 

      The additional 2 carbohydrates are put on in the ER and are needed to get to the Golgi

    • C. 

      The additional 2 carbohydrates are not needed for transport

    • D. 

      We can not conclude any of the above

  • 3. 
    Tertiary structure uses the following types of bonds?
    • A. 

      Hydrogen

    • B. 

      Ionic

    • C. 

      Disulfide brdiges

    • D. 

      All of the above

  • 4. 
    Which type of structure involves interactions between subunits?
    • A. 

      Quatenary

    • B. 

      Tertiary

    • C. 

      Secondary

    • D. 

      Primary

  • 5. 
    Which type a structure only uses covalent bonds?
    • A. 

      Secondary

    • B. 

      Primary

    • C. 

      Quatenary

    • D. 

      Tertiary

  • 6. 
    Which type of structure involves only hydrogen bonds?
    • A. 

      Primary

    • B. 

      Quatenary

    • C. 

      Secondary

    • D. 

      Tertiary

  • 7. 
    • A. 

      The molecule shown is used mainly for energy

    • B. 

      The molecule shown is part of a membrane

    • C. 

      The molecule shown helps transport ions

    • D. 

      The molecule shown has no biological function

  • 8. 
    • A. 

      The molecule shown is a fatty acid

    • B. 

      The molecule shown is a fat

    • C. 

      The molecule shown is a phospholipid

    • D. 

      The molecule shown is a steroid

  • 9. 
    Which type of organism would have problems in isotonic media?
    • A. 

      Animal

    • B. 

      Plant

    • C. 

      Animal and Plant

    • D. 

      Neither Plant nor Animal

  • 10. 
    Click on the URL http://www.youtube.com/watch?v=tSJ0LnOHpTw The type of transport shown in the video is
    • A. 

      Osmosis

    • B. 

      Facilitated diffusion

    • C. 

      Endocytosis

    • D. 

      None of the above

  • 11. 
    An organism has an arrhythmic heart. This might be due to a defect in
    • A. 

      Gap Junctions

    • B. 

      Anchoring Junctions

    • C. 

      Tight Junctions

    • D. 

      Ribosomes

  • 12. 
    Which of the following involves receptor mediated endocytosis?
    • A. 

      Vesicles releasing neurotransmitters

    • B. 

      Liquids being taken up from the surrounding fluids

    • C. 

      Ldl being taken up by blood vessel cells

    • D. 

      White blood cells eating bacteria

  • 13. 
    Lipids get made in
    • A. 

      The Golgi

    • B. 

      Ribosomes

    • C. 

      Rough ER

    • D. 

      Smooth ER

  • 14. 
    Cilia are made of
    • A. 

      Microtubules

    • B. 

      Actin

    • C. 

      Intermediate filaments

    • D. 

      Anchoring Junctions

  • 15. 
    Microvilli are thin finger like projections found in intestines and other cells. They are made from
    • A. 

      Microtubules

    • B. 

      Actin

    • C. 

      Intermediate filaments

    • D. 

      None of the above

  • 16. 
    • A. 

      The image above was made using Scanning Electron Microscopy

    • B. 

      The image above was made using Transmission Electron Micrscopy

    • C. 

      The image above was made using a light microscope

    • D. 

      The image above was made using the antibody method

  • 17. 
      Red blood cells are usually disc shaped. You hypothesize that microfilaments are needed for this shape. Giving cells cytocholasin, a drug that interferes with actin function causes the cells to be spherical. Giving these cells taxol, a drug that interferes with microtubule function has no effect. From these results one can conclude
    • A. 

      Cytocholasin is needed for normal cell shape

    • B. 

      Microtubules are needed for normal cell shape

    • C. 

      Microfilaments are needed for normal cell shape

    • D. 

      . Intermediate filaments have no role in cell shape

  • 18. 
    A control in the above experiment would be
    • A. 

      Red blood cells given no drugs

    • B. 

      Red Blood Cells given taxol

    • C. 

      Red Blood Cells given cytocholasin

    • D. 

      Normally round cells given cytocholasin

  • 19. 
    A genetic defect in a protein that helps actin fibers form results in low mobility for white blood cells. This is because
    • A. 

      People with the defect get frequent infections

    • B. 

      The cells use a myosin based movement mechanism

    • C. 

      White blood cells help kill bacteria

    • D. 

      Sperm use a flagella based mechanism for movement

  • 20. 
    Histone are proteins that are usually found in the nucleus.  A mutant histone protein is found in the cytoplasm instead. Analysis of the protein shows that it is missing it's first 3 amino acids.  You can explain this result by saying
    • A. 

      The histone is missing a signal sequence needed to get into the cytoplasm

    • B. 

      The histone is missing a signal sequence needed to get into the nucleus

    • C. 

      HIstones are part of the ER complex which is needed to sort proteins

    • D. 

      The first few amino acids are needed for the ribosome to make the protein.

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