One way of expressing the rate at which an enzyme can catalyze a reaction is to

Question

One way of expressing the rate at which an enzyme can catalyze a reaction is to give its turnover number. The turnover number is the maximum number of substrate molecules that can be acted on by one molecule of enzyme per unit of time Enzyme: Urease Substrate: Urea Turnover Number: 10,000 How many molecules of urea can one molecule of urease act on in 15 minutes?

Explanation / Answer

time = 15 * 60 = 900 s. as turnover number has unit of s^-1 ---> molecules of urea that one molecule of urease act on in 15 minutes = Turnover number of urease * time = 10,000 * 900 = 9,000,000 molecules

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