Week 1: Laboratory Instruments and Techniques Quiz

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Questions and Answers

What is the primary function of a centrifuge in a laboratory?

  • To measure the mass of substances accurately
  • To measure the intensity of electromagnetic radiation
  • To separate components of a mixture based on density (correct)
  • To sterilize equipment and materials

Which microscopy technique utilizes an electron beam to achieve higher resolution imaging?

  • Electron microscopy (correct)
  • Optical microscopy
  • Colorimetry
  • Spectrophotometry

What is the primary function of an autoclave in a laboratory?

  • To analyze the color of substances
  • To separate components of a mixture
  • To measure the concentration of solutions
  • To sterilize materials and equipment using high-pressure steam (correct)

Which instrument is used to measure the mass of substances with high precision?

<p>Analytical balance (A)</p> Signup and view all the answers

What is the primary function of a spectrophotometer in a laboratory?

<p>To measure the intensity of electromagnetic radiation at different wavelengths (C)</p> Signup and view all the answers

Which microscopy technique utilizes visible light to image samples?

<p>Optical microscopy (C)</p> Signup and view all the answers

What is the purpose of a Transmission Electron Microscope?

<p>Sending an electron beam through a thin slice of the specimen (D)</p> Signup and view all the answers

Which method of extraction involves keeping the plant-drug in contact with the solvent in a stoppered container for a defined period?

<p>Maceration (C)</p> Signup and view all the answers

What is the primary function of Tannins in plants?

<p>Defending against mammalian herbivores (C)</p> Signup and view all the answers

Which type of chemical was one of the first antiseptics used to sterilize medical equipment?

<p>Phenolic (C)</p> Signup and view all the answers

What is the most diverse and abundant natural remedy in terms of structure among Phytochemicals?

<p>Terpenoids (D)</p> Signup and view all the answers

Which type of Electron Microscopy visualizes details on the surfaces of specimens?

<p>Scanning Electron Microscope (D)</p> Signup and view all the answers

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