very difficult chemistry question

[Gamewizard]

Hi can anyone help me with this chemistry question, im finding it very difficult.

 

If an enzyme catalysed reaction has a maximal velocity of 25micromole min-1 and km for the enzyme and substrate is 3 mM, what is the initial reaction velocity for a substrate concentration of 3 mM?

 

please help

 

thank you

[jimmydasaint]

I think you need some additional information (but I am trying to think back a large number of years). Hope this helps:

 

http://www.wellesley.edu/Biology/Concepts/Html/initialvelocity.html

[cypress]

It's not too difficult if you have the equation you need. This must be homework, right? What is the equation for reaction kinetics when you have an enzyme in an nonreversible reaction? Do you have that, because if you do you are nearly done. The problem statement has given you all the values you need.

 

If you don't have the equation or don't understand why the equation works or don't understand the concept, please ask and I will help you with those questions.