Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which of the following is used to preserve specimens in the biology laboratory?

  • A.Phenol
  • B.Benzaldehyde
  • C.Formaldehyde
  • D.Acetic acid

Answer: C

Formaldehyde is used to preserve specimens.

Formalin, a 40 per cent aqueous solution, cross-links the amino groups of proteins and so hardens the tissue and kills any bacteria or fungi that would decompose it. Its own pungency and toxicity are the drawback.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.