Problem: Jason is setting up a reaction with the restriction endonuclease EcoRI. The concentration of the EcoRI enzyme solution is 20,000 units/mL. Jason mixes the following in a test tube:4 uL dsDNA, 14 uL buffer, 2 uL EcoRIWhat is the final concentration of EcoRI enzyme in Jason's reaction?A. 2,222 units/mLB. 2,857 units/mLC. 2,000 units/mLD. 200,000 units/mL

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This is a simple dilution problem for the EcoRI enzyme solution. 

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Problem Details

Jason is setting up a reaction with the restriction endonuclease EcoRI. The concentration of the EcoRI enzyme solution is 20,000 units/mL. Jason mixes the following in a test tube:

4 uL dsDNA, 14 uL buffer, 2 uL EcoRI

What is the final concentration of EcoRI enzyme in Jason's reaction?

A. 2,222 units/mL

B. 2,857 units/mL

C. 2,000 units/mL

D. 200,000 units/mL