Practice Quiz for Nanoscience

1. Nanoscience has to do with objects that are:

1-100 nanometer

0.01 to 0.001 meters

0.000 1 to 0.000 001

Smaller than a nanometer

Nanoscience deals with objects from 1-100 nanometers, which is from 0.000 000 001 to 0.000 000 100 meters

Explanation

Nanoscience deals with objects from 1-100 nanometers, which is from 0.000 000 001 to 0.000 000 100 meters

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

True

False

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

Explanation

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

3. What does hydrophobic mean?

Attracted to water, causing it to spread out.

Repels water, causing it to bead up.

Rose petals and the lotus plant are examples of this.

Explanation

Rose petals and the lotus plant are examples of this.

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

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.

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.

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.

Nano carries potential for solving many problems, but it could also create problems.

Explanation

Nano carries potential for solving many problems, but it could also create problems.

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.

We know nanomachines work because they exist inside us, viruses for example.

Explanation

We know nanomachines work because they exist inside us, viruses for example.

7. Which of the following is used to observe the unseen?

Hydrophobocity Microscopes

Magnetos

Atomic Force Tunnelers

Scanning Tunneling Microscopes

A scanning tunneling microscope is great for viewing the unseen.

Explanation

A scanning tunneling microscope is great for viewing the unseen.

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

All are examples of nanoscience, but stretchable gold is not found in nature.

Explanation

All are examples of nanoscience, but stretchable gold is not found in nature.

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

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

Explanation

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

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

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.

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