The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In a reaction substrate is available in a concentration that is l000times the Km value of the enzyme. After 9 minutes of reaction, l7o substrate is conveed to product (12 microgram/ml). If the concentration of the enzyme is changed to 1/3 and concentration of substrate is doubled. What is the time taken to conve the substrate into the same amount of product, i.e. I 2microgram/ml?   (A) 9 minutes   (B) 4.5 minutes   (C) 27 minutes   (D) 13.5 minutes
['(C) 27 minutes <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 9 minutes \n (B) 4.5 minutes \n (C) 27 minutes \n (D) 13.5 minutes <> possible answers', '  In a reaction substrate is available in a concentration that is l000times the Km value of the enzyme. After 9 minutes of reaction, l7o substrate is conveed to product (12 microgram/ml). If the concentration of the enzyme is changed to 1/3 and concentration of substrate is doubled. What is the time taken to conve the substrate into the same amount of product, i.e. I 2microgram/ml? <> context@']