Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Week 01: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Nanotechnology, Part 1

Q1. The size of red blood cells is:

  • 7-8nm
  • 700-800nm
  • 70-80nm
  • 7000-8000nm

Q2. What is the 2013 budget for the U.S. National Nanotechnology Initiative?

  • $2.3 billion
  • $830 million
  • $1.8 billion
  • $570 million

Q3. Which structure contain million of atoms?

  • Protein molecules
  • DNA molecules
  • Alcohol molecules
  • Water molecules

Q4. Which of the following sentences is true?

  • Carbon nanotubes are 100 times stronger than steel at one-sixth of the weight
  • Carbon nanotubes are 1000 times stronger than steel at one-sixth of the weight
  • Carbon nanotubes are 10 times stronger than steel at one-sixth of the weight

Q5. Carbon nanotubes (in air) have the ability to sustain temperature as high as:

  • 2000⁰C
  • 3000⁰C
  • 800⁰C

Q6. What is the dimensionality of nanowires?

  • 2-D
  • 1-D
  • 0-D

Q7. When discussing nano-science, what is the size range of structures?

  • 1-100nm
  • Everything below 100nm
  • 10-1000nm
  • 0.1-10nm

Q8. Which of the following statements is correct?

  • The use of nanotechnology reduces computer’s size and power consumption while enhances speed and performance.
  • The use of nanotechnology reduces computer’s price and power consumption and enhances speed and performance.
  • The use of nanotechnology reduces computer’s size and price and enhances speed and performance.

Q9. Which is true?

  • When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk decreases.
  • When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk increases.
  • When the size of an object decreases, the ratio between atoms on the surface and atoms in the bulk does not change.

Week 02: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Nanotechnology, Part 2

Q1. Which of the following statements is most correct about Atomic Force Microscopy (AFM)?

  • AFM moves a very sharp tip over the surface of the specimen to “feel” its shape.
  • AFM can visualize protein bound to DNA molecules.
  • AFM can visualize unfixed specimens in water or buffer.

Q2. Electron microscopes have a much higher resolution than either the human eye or conventional light microscope because:

  • Of their higher magnification
  • Of the very short (nanometer) wavelengths of electrons
  • All of the answers
  • The lenses used are of much higher quality

Q3. The best description of “bottom up” fabrication is:

  • Utilizing direct writing without a mask on a “resist”
  • Building something by assembling smaller components
  • Have a limit of 0.1 microns (100 nm)
  • Starting with a larger component and carving away material.

Q4. DNA molecule is a good example for:

  • Top down fabrication
  • Self assembly process
  • A biological un-understood process

Q5. The best technique for fabrication of many devices with minimal resolution of 200 nm will be:

  • Focused Ion Beam
  • E-beam Lithography
  • Self-Assembly
  • Standard Photolithography

Q6. The best technique to fabricate one of a kind device with minimal resolution of 10 nm will be:

  • Focused Ion Beam
  • E-beam Lithography
  • Standard Photolithography
  • Self-Assembly

Q7. What is the medium gas inside the Scanning Electron Microscope (SEM)?

  • Helium
  • Argon
  • Nitrogen
  • There is vacuum inside the SEM

Q8. Which of the following is true?

  • Self-Assembly can happen spontaneously
  • Self-Assembly is a process that happens only in the lab
  • Self-Assembly is a process that happens only in nature

Q9. Which is true regarding Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM)?

  • All use electron beam for imaging
  • All can detect features below 100nm
  • All work under vacuum conditions

Week 03: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Introduction to Sensors’ Science and Technology

Q1. Which of the following is not affected by the diameter of nanoparticles

  • Conductivity
  • Luminescence
  • Interparticle distance

Q2. The sensor in the image is probably:

  • A biological sensors
  • An electrochemical sensor
  • An optical sensor
  • A mass sensitive sensor

Q3. The sensor in the image is probably:

  • An optical sensor
  • A mass sensitive sensor
  • A chemical sensors
  • An electrochemical sensor

Q4. Gold nanoparticles are highly attractive for cancer therapy because:

  • Amplified radio therapy treatments
  • Tunneling mechanism
  • Biocompatibility
  • Amplified radio therapy treatments and biocompatibility

Q5. In comparison to spherical nanoparticles, cubic nanoparticles will have

  • Enhanced sensing for polar analytes
  • Enhanced sensing for non-polar analytes
  • Enhanced sensing for small analytes
  • Enhanced sensing for all analytes

Q6. What will be affected from changing the capping ligand of the nanoparticle?

  • Conductivity
  • Inter-particle distance
  • All of the answers
  • Chemical sensitivity

Q7. Production of nanoparticles by Laser Ablation method is similar to:

  • Bottom-up manufacturing
  • Top-down manufacturing
  • Chemical synthesis manufacturing

Q8. What can be controlled when preparing nanoparticles through Laser Ablation method?

  • Type of capping ligand
  • The conductivity of nanoparticles
  • The solvent and the nanoparticles starting material
  • Non of the answers

Q9. What would be the effect of elevating the temperature of chemiresistor based on nanoparticles?

  • Resistance will decline with rising temperature
  • Resistance would not be affected
  • Resistance will rise with rising temperature

Q10. Which is true about the swelling of the nanoparticles (NPs) film?

  • It will always result in lower resistance
  • It can result in higher or lower resistance, depending on the morphology
  • It will always result in higher resistance

Week 04: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Metal Nanoparticle-based Sensors

Q1. Which of the following is not affected by the diameter of nanoparticles

  • Luminescence
  • Conductivity
  • Interparticle distance

Q2. Which property of nanoparticles is used for separation of molecules in a solution?

  • Magnetism
  • Atomic lattice
  • Conductivity
  • Luminescence

Q3. Gold nanoparticles are highly attractive for cancer therapy because:

  • Biocompatibility
  • Amplified radio therapy treatments
  • Amplified radio therapy treatments and biocompatibility
  • Tunneling mechanism

Q4. In comparison to spherical nanoparticles, cubic nanoparticles will have

  • Enhanced sensing for all analytes
  • Enhanced sensing for small analytes
  • Enhanced sensing for non-polar analytes
  • Enhanced sensing for polar analytes

Q5. What will be affected from changing the capping ligand of the nanoparticle?

  • Chemical sensitivity
  • Conductivity
  • Inter-particle distance
  • All of the answers

Q6. Production of nanoparticles by Laser Ablation method is similar to:

  • Chemical synthesis manufacturing
  • Bottom-up manufacturing
  • Top-down manufacturing

Q7. What can be controlled when preparing nanoparticles through Laser Ablation method?

  • Non of the answers
  • The solvent and the nanoparticles starting material
  • Type of capping ligand
  • The conductivity of nanoparticles

Q8. What would be the effect of elevating the temperature of chemiresistor based on nanoparticles?

  • Resistance will decline with rising temperature
  • Resistance would not be affected
  • Resistance will rise with rising temperature

Q9. Which is true about the swelling of the nanoparticles (NPs) film?

  • It will always result in lower resistance
  • It will always result in higher resistance
  • It can result in higher or lower resistance, depending on the morphology

Q10. A sensor composed of metal nanoparticles with a small and very polar capping ligand will be:

  • Significantly more sensitive to large molecules and to non-polar analytes
  • Less sensitive to small molecules and polar analytes
  • Not able to detect large molecules and less sensitive to non-polar analytes

Week 05: Nanotechnology and Nanosensors, Part1 Coursera Quiz Answers

Quiz: Quantum Dot Sensors

Q1. A conventional quantum dots will probably be synthesized form:

  • Zinc
  • Gold
  • Silver
  • Cadmium

Q2. What are quantum dots (QD)?

  • Dielectric
  • Semiconductors
  • Metals

Q3. What is the principle that makes Self-organized quantum dots fabrication possible

  • Surface migration
  • Lattice-mismatched
  • Thermal desorption
  • Non of the answers

Q4. Which solution contains larger quantum dots?

  • The red one
  • The yellow one
  • It can not be determined

Q5. The quantum dots in the image can be best describe as:

  • Quantum dots synthesized by colloidal chemistry
  • Self-organized quantum dots
  • All of the answers
  • Surface modification of quantum dots

Q6. Which of the following is not an advantage of quantum dots QD for contrast agents applications

  • Broad excitation spectrum
  • A narrow emission spectrum
  • Synthesis from heavy metals
  • Separation between excitation and emission wavelength

Q7. What has similar size to the size of a quantum dots (QD)?

  • A virus
  • A glucose molecule
  • A cancerous cell
  • An atom

Q8. What is achieved with surface modification to quantum dots (QD)?

  • Solubility in various solvents
  • Better control of QDs size
  • A narrow emission spectrum
  • Thermal stability

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