Lyophilization and Food Preservation Quiz
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Questions and Answers

What process is associated with chromosomal proteins called histones?

  • Binary fission (correct)
  • Transcription
  • Meiosis
  • Mitosis

Which type of cells have flagella over their entire surface?

  • Kingdom Protista (correct)
  • Prokaryotic cells
  • Algae and protozoa
  • Peritrichous bacteria

What is the function of glycocalyx?

  • Protective slimy material (correct)
  • Reproduction by binary fission
  • Movement of organisms
  • Method of staining in microscopy

Which staining method is used for observing living cells removed from an organism?

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

What color will gram-positive bacteria appear at the end of the Gram staining procedure?

<p>Blue to purple (D)</p> Signup and view all the answers

Which step follows flooding the slide with iodine solution during the Gram staining procedure?

<p>Decolorize with acetone (B)</p> Signup and view all the answers

"Hanging preparation" is particularly useful for studying the motility of:

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

What is the main purpose of structural staining?

<p>To observe endospores and capsules (D)</p> Signup and view all the answers

What does negative staining help contrast in diagnostic microscopy?

<p>Thin specimen with opaque fluid (B)</p> Signup and view all the answers

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