QuestionMay 28, 2025

Which medium cannot be sterilized in the autoclave? Mannitol salt agar (MSA) Lysine decarboxylase Simmons citrate Urea

Which medium cannot be sterilized in the autoclave? Mannitol salt agar (MSA) Lysine decarboxylase Simmons citrate Urea
Which medium cannot be sterilized in the autoclave?
Mannitol salt agar (MSA)
Lysine decarboxylase
Simmons citrate
Urea

Solution
4.3(300 votes)

Answer

Lysine decarboxylase Explanation 1. Identify the medium components Mannitol salt agar (MSA), Simmons citrate, and urea are solid media, while lysine decarboxylase is typically a liquid medium. 2. Determine heat sensitivity Lysine decarboxylase contains amino acids and enzymes that can be denatured by high heat, making it unsuitable for autoclaving.

Explanation

1. Identify the medium components<br /> Mannitol salt agar (MSA), Simmons citrate, and urea are solid media, while lysine decarboxylase is typically a liquid medium.<br /><br />2. Determine heat sensitivity<br /> Lysine decarboxylase contains amino acids and enzymes that can be denatured by high heat, making it unsuitable for autoclaving.
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