Multiple choice

An enzyme has a Km of 4.7 $\times$ 10–5 M and Vm is 22 micro moles per litre per min. The enzyme reaction is carried out at a substrate concentration of 2 $\times$ 10-4 M. The initial reaction velocity for this enzyme catalyzed reaction will be

  1. 6.5 micro moles per litre per min

  2. 17.8 micro moles per litre per min

  3. 13.0 micro moles per litre per min

  4. 8.9 micro moles per litre per min
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Michaelis Menten equation is v = (Vm times S) / (Km + S). Substituting Vm = 22, Km = 4.7 times 10^-5, and S = 2 times 10^-4 into the formula yields an initial velocity of approximately 17.8 micro moles per litre per min.

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