Practice Quiz For Nanoscience

2.

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

True
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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3.

What does hydrophobic mean?

Attracted to water, causing it to spread out.
Repels water, causing it to bead up.

Correct Answer

A. Repels water, causing it to bead up.

Explanation

Rose petals and the lotus plant are examples of this.

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4.

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

Location and destruction of cancerous cells
Antibacterial food containers
Rigid, lightweight building materials
All of the above are possible

Correct Answer

A. 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.

What might be a concern about the use of nanotechnology?

Nanobased materials could be toxic.
Nanoparticles may build up in the brain or liver.
Nanoparticles may not break down in the environment.
All of the above are legitimate concerns about nanotechnology.

Correct Answer

A. 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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6.

We know that nanomachines can exist because:

They already exist. For example, a virus in your body.
Scientists have created a nanobot that travels through your bloodstream "zapping" cancerous cells
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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7.

Which of the following is used to observe the unseen?

Hydrophobocity Microscopes
Magnetos
Atomic Force Tunnelers
Scanning Tunneling Microscopes

Correct Answer

A. Scanning Tunneling Microscopes

Explanation

A scanning tunneling microscope is great for viewing the unseen.

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8.

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

Hydrophobic surface of a lotus plant
Hydrophylic surface of a pitcher plant
Sticky pads on the bottom of an ant's foot
Gold that can stretch to form flexibile electronics

Correct Answer

A. 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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9.

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

Bottom up fabrication
Nanolithography
Top down fabrication
Self assembly

Correct Answer

A. 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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10.

Which of the following represent objects on the nanoscale?

Virus
Bacteria
A red blood cell
Width of a DNA molecule
Thickness of a cell membrane
A water molecule

Correct Answer(s)

A. Virus
A. Width of a DNA molecule
A. Thickness of a cell membrane
A. 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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Practice Quiz For Nanoscience

Nanoscience has to do with objects that are:

Quiz Preview

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

What does hydrophobic mean?

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

What might be a concern about the use of nanotechnology?

We know that nanomachines can exist because:

Which of the following is used to observe the unseen?

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

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

Which of the following represent objects on the nanoscale?