Microbiology- Cell Membranes And Cholera Quiz

19 Questions

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Microbiology- Cell Membranes And Cholera Quiz

This is a microbiology quiz about cell membrane and cholera. The cell membrane separates the cytoplasm (the contents of the cell) from the outer environment. And cholera is an infectious disease that can cause severe diarrhea. Do you know how cholera can affect cell membranes? Well, let's see what else you know.


Questions and Answers
  • 1. 
    In order for a virus or bacteria to cause symptoms (make you sick) what needs to happen 
    • A. 

      Only one cell needs to enter the body 

    • B. 

      A large amount of cells need to touch you and you become sick 

    • C. 

      A large amount of cells need to enter the small intestine and make it past the goblet cells and release their toxins in the brush border cell

    • D. 

      Bacteria dont make you sick

  • 2. 
    The type of cell which absorbs nutrients from the lumen of the small intestine is called 
    • A. 

      Nutrient absorbing cell

    • B. 

      Brush border cell 

    • C. 

      Goblet cell

    • D. 

      Small intestine cell

  • 3. 
    True or false, a basic environment (higher PH) is ideal for most types of contagious bacterium
    • A. 

      True

    • B. 

      False

  • 4. 
    Happens if a large number of contagious bacteria or viral cells enter the epithelial layer   
    • A. 

      You are infected and most likley you will get sick 

    • B. 

      You are infected but you wont get sick 

    • C. 

      Nothing will happen until the cells exit the epithelium and release their toxins

    • D. 

      The epithelium becomes infected 

  • 5. 
    When the pili of the Vibrio cholerae is attached to the protein receptors what is released?
    • A. 

      We have yet to figure that out 

    • B. 

      Enzymes 

    • C. 

      ZOT1 and Cholera toxin

    • D. 

      Various other toxins

  • 6. 
    True or false, the cholera toxins binds to the ganglioside receptor but because the receptor does not recognize that it is not a human cell toxins are released. 
    • A. 

      True

    • B. 

      False

  • 7. 
    What is the function of the ganglioside receptor?
    • A. 

      To carry out transport and keep the structeral integrity of the cell

    • B. 

      To identify bacterial pathogens

    • C. 

      To help bacteria release their toxins

  • 8. 
    How do you die from cholera
    • A. 

      Because of the toxin binding to the ganglioside receptor, Na+ and Cl- leave the cell and enter the body, therefore dehydrating your body fast. 

    • B. 

      Internal bleeding 

    • C. 

      Diarrhea casues your body to become dehydrated fast and because of that you die 

    • D. 

      Your cells explode due to the hypotonic solution your cells are exposed to

  • 9. 
    A mitochondrial membrane is made up of around 
    • A. 

      75% protien, 25% phospholipids

    • B. 

      50% protien 50% phospholipid

    • C. 

      10% protien 90% phospholipid 

    • D. 

      100% phospholipid 

  • 10. 
    All cell membranes have an equal composition of protein, phospholipids and carbohydrates
    • A. 

      True

    • B. 

      False

  • 11. 
    Phospholipids are defined as (blank) HINT: both hydrophilic and hydrophobic
  • 12. 
    True or false integral proteins are amphipathic but peripheral proteins are hydrophobic 
    • A. 

      True

    • B. 

      False

  • 13. 
    The chemical known as the backbone of a phospholipid molecule is what?
    • A. 

      Phosphate 

    • B. 

      Glycerol

    • C. 

      Saturated fatty acid 

    • D. 

      Unsaturated fatty acid 

  • 14. 
    Fatty acid which has the most possible hydrogens is known as what? HINT solid fats 
  • 15. 
    Fatty acid where there is a double covalent bond between two carbons, therefore, limiting the number of hydrogens possible. HINT oils 
  • 16. 
    True or false, phospholipids have tails that are only comprised of unsaturated fatty acid  
    • A. 

      True

    • B. 

      False

  • 17. 
    True or false, When saturated fatty acids are packed together they cause less movement in the membrane. 
    • A. 

      True

    • B. 

      False

  • 18. 
    True or false the reason cell membranes are known by the "fluid mosaic model" is because they are comprised of both saturated fatty acids and unsaturated fatty acids, therefore, causing more fluidity. 
    • A. 

      True

    • B. 

      False