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Quiz

F211 biology

rosieoj2 14 perguntas

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Perguntas do quiz (14)

  1. 1what is the definition of magnification?
    1. Ahow big an object is
    2. Bthe difference between the size of the image and the size of the object
    3. Cthe degree to which the size of an image is larger than the object itself
  2. 2what is the definition of resolution?
    1. Athe degree to which it's possible to distinguish between to objects that are very close together
    2. Bhow detailed an image looks
    3. Chow blurry an image looks
  3. 3what is the resolution and magnification of a light microscope?
    1. Ares = 2000 nm, mag = x2000
    2. Bres = 200 nm, mag = x 1500
    3. Cres = 200 micrometres, mag = x2000
  4. 4how many micro metres is one cm equivalent to?
    1. Aone hundred thousand
    2. Bone million
    3. Cten thousand
  5. 5how many nanometres is one cm equivalent to?
    1. Aten million
    2. Bone million
    3. Cone hundred million
  6. 6what is the maximum magnification and resolution of a scanning electron microscope?
    1. Amag = x500 000, res = 0.2 nm
    2. Bmag = x 500 000, res = 2 nm
    3. Cmag = x100 00, res = 0.2 nm
  7. 7what is the maximum magnification and resolution of a transmission electron microscope?
    1. Amag = x500 000, res = 0.2 nm
    2. Bmag = x 100 000, res = 0.2 nm
    3. Cmag = x500 000, res = 2 nm
  8. 8what is a disadvantage of an electron microscope?
    1. Asamples need to be prepared in a vacuum so electron beam is not deflected by molecules in the air
    2. Bit has a maximum resolution which is 1000 times greater than a light microscope
    3. Cit needs to be cleaned in ethanol daily
  9. 9what is the cytoskeleton made of?
    1. Acarbohydrate strings
    2. Bprotein fibres
    3. Cphospholipids
  10. 10what is the main role of the cytoskeleton?
    1. Aprovide stability for the cell
    2. Bcontrol what substances enter or leave the cell
    3. Crestrict the movement of hydrophilic substances past the cell

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AS - Level Biology Quiz sobre F211 biology, criado por rosieoj2 em 01-03-2015.
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English
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