If you are asked to make 200 mL of Thayer-Martin agar, who much sheep's blood would you add to the medium? Recall that this complex medium contains 5% sheep blood.
A) 10%
B) 5 mL
C) 10 mL
D) Random quantities
E) 10,000 RBCs

Question

If you are asked to make 200 mL of Thayer-Martin agar, who much sheep's blood would you add to the medium? Recall that this complex medium contains 5% sheep blood.
A) 10%
B) 5 mL
C) 10 mL
D) Random quantities
E) 10,000 RBCs

Quizplus · Accepted Answer

To make 200 mL of Thayer-Martin agar, 5% of it must be sheep's blood. Therefore, the calculation goes as follows: 
5% = 5/100 = 1/20
1/20 of 200 mL = 10 mL of sheep's blood. 
Therefore, the correct choice is C) 10 mL.

If You Are Asked to Make 200 ML of Thayer-Martin