1.What does the professor mainly discuss?

  • A. The design of mechanical vehicles on a microscopic scale.
  • B. The use of modified bacteria to power microscopic machines.
  • C. Ways that nanotechnology has been used in medical treatment.
  • D. How none-machines are being used to study biological processes.

2.What components of a none-car does the professor say present the greatest challenge to researches? Click on 2 answers

  • A. A barking mechanism
  • B. Wheels
  • C. An engine
  • D. A steering mechanism

3.Why does the professor mention honey?

  • A. To help illustrate the difficulty of moving nano-vehicles through water or air.
  • B. To explain why fluids like water have greater density than air.
  • C. To indicate a surprisingly useful source of energy for nano-vehicles.
  • D. To make a comparison between insect movement and the movement of none-vehicles.

4.What was responsible for the successful movement to the platinum-gold rod nano-engine?

  • A. Hydrogen peroxide destroyed bacteria cells blocking the engine’s paths.
  • B. The combination of two chemical reactions created a proton imbalance.
  • C. Interactions between the platinum and gold cost the rod to spin quickly.
  • D. The magnetic field that surrounded the engine was destabilized.

5.Why does the nano-engine that the professor discusses not need to carry fuel?

  • A. The machine is pushed forward by air or water pressure.
  • B. The machine is powered externally by rotating magnets.
  • C. The carbon wheels on the machine rotate freely on their own.
  • D. The liquid in which the machine is immersed is fuel supply.

6.What is the professor’s attitude about the use of magnetic fields for steering nano-vehicles?

  • A. It has the advantage of allowing nano-vehicles to steer themselves independently.
  • B. It is an effective approach but other approaches are needed as well.
  • C. It is a prone steering method but decreases engine efficiency.
  • D. It has been the most difficult challenge so far in the development of nano-vehicles.