NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Enzyme Unit
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Katal
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Both a & b
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None of the above
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Detailed explanation-1: -The katal (symbol: kat) is the unit of catalytic activity in the International System of Units (SI) used for quantifying the catalytic activity of enzymes (that is, measuring the enzymatic activity level in enzyme catalysis) and other catalysts.
Detailed explanation-2: -In 1977, international agreement was reached between these bodies and WHO that “catalytic activity” (z), of a catalyst in a given system is defined by the rate of conversion in a measuring system (in mol/s) and expressed in “katal” (symbol, kat; equal to 1 mol/s).
Detailed explanation-3: -Catalytic activities in body fluids are in general referred to 1 ml or 1 liter. Accordingly, they are expressed as mU/ml or U/1. Numerically, the terms U/1 and mU/ml are identical, but U/1* has come to be the internationally preferred unit.