Practice Quiz For Nanoscience

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Practice Quiz For Nanoscience - Quiz

Take this quiz to see how comfortable you are with the course material before taking the final assessment.


Questions and Answers
  • 1. 

    Nanoscience has to do with objects that are:

    • A.

      1-100 nanometer

    • B.

      0.01 to 0.001 meters

    • C.

      0.000 1 to 0.000 001

    • D.

      Smaller than a nanometer

    Correct Answer
    A. 1-100 nanometer
    Explanation
    Nanoscience deals with objects from 1-100 nanometers, which is from 0.000 000 001 to 0.000 000 100 meters

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  • 2. 

    Which type of nanofabrication is the fastest and therefore the cheapest (also the least reliable)?

    • A.

      Bottom up fabrication

    • B.

      Nanolithography

    • C.

      Top down fabrication

    • D.

      Self assembly

    Correct Answer
    D. Self assembly
    Explanation
    Top down and nanolithography are faster than bottom up technology, but self assembly is the cheapest, fastest, and least reliable.

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  • 3. 

    Which of the following is not an example of nanoscience in nature?

    • A.

      Hydrophobic surface of a lotus plant

    • B.

      Hydrophylic surface of a pitcher plant

    • C.

      Sticky pads on the bottom of an ant's foot

    • D.

      Gold that can stretch to form flexibile electronics

    Correct Answer
    D. Gold that can stretch to form flexibile electronics
    Explanation
    All are examples of nanoscience, but stretchable gold is not found in nature.

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  • 4. 

    Which of the following are currently or might soon be possible with nanotechnology?

    • A.

      Location and destruction of cancerous cells

    • B.

      Antibacterial food containers

    • C.

      Rigid, lightweight building materials

    • D.

      All of the above are possible

    Correct Answer
    D. All of the above are possible
    Explanation
    Antibacterial food containers are already available - they are infused with silver.

    Nanotubes will make lightweight rigid buildling materials available.

    We can attach gold particles to a biomolecule that bonds with cancerous DNA. We then apply a laser, and the gold particle heats up, killing the cancerous cell.

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  • 5. 

    Which of the following is used to observe the unseen?

    • A.

      Hydrophobocity Microscopes

    • B.

      Magnetos

    • C.

      Atomic Force Tunnelers

    • D.

      Scanning Tunneling Microscopes

    Correct Answer
    D. Scanning Tunneling Microscopes
    Explanation
    A scanning tunneling microscope is great for viewing the unseen.

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  • 6. 

    What might be a concern about the use of nanotechnology?

    • A.

      Nanobased materials could be toxic.

    • B.

      Nanoparticles may build up in the brain or liver.

    • C.

      Nanoparticles may not break down in the environment.

    • D.

      All of the above are legitimate concerns about nanotechnology.

    Correct Answer
    D. All of the above are legitimate concerns about nanotechnology.
    Explanation
    Nano carries potential for solving many problems, but it could also create problems.

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  • 7. 

    Nanotools, like the Atomic Force Microscope, allow us to build atom by atom.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    This is true, although it would be a very slow and expensive process to build anything of size.

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  • 8. 

    What does hydrophobic mean?

    • A.

      Attracted to water, causing it to spread out.

    • B.

      Repels water, causing it to bead up.

    Correct Answer
    B. Repels water, causing it to bead up.
    Explanation
    Rose petals and the lotus plant are examples of this.

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  • 9. 

    We know that nanomachines can exist because:

    • A.

      They already exist. For example, a virus in your body.

    • B.

      Scientists have created a nanobot that travels through your bloodstream "zapping" cancerous cells

    • C.

      Scientists have created a small vehicle with a door and tires that can drive around inside your bloodstream.

    Correct Answer
    A. They already exist. For example, a virus in your body.
    Explanation
    We know nanomachines work because they exist inside us, viruses for example.

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  • 10. 

    Which of the following represent objects on the nanoscale?

    • A.

      Virus

    • B.

      Bacteria

    • C.

      A red blood cell

    • D.

      Width of a DNA molecule

    • E.

      Thickness of a cell membrane

    • F.

      A water molecule

    Correct Answer(s)
    A. Virus
    D. Width of a DNA molecule
    E. Thickness of a cell membrane
    F. A water molecule
    Explanation
    The objects that represent objects on the nanoscale are virus, width of a DNA molecule, thickness of a cell membrane, and a water molecule. These objects are all extremely small and can only be observed and studied at the nanoscale level. A virus is a tiny infectious agent that can only be seen with a powerful microscope. The width of a DNA molecule is also on the nanoscale, as DNA is made up of individual nucleotides that are only a few nanometers wide. The thickness of a cell membrane and a water molecule are also on the nanoscale, as they are both incredibly thin and small in size.

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  • Current Version
  • Oct 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 29, 2011
    Quiz Created by
    Bdegenhardt
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