Microbiology MCQ 2 - IIT JAM MCQ
21 Questions MCQ Test - Microbiology MCQ 2
1 ml of microbial culture was diluted to 10ml and 1ml of diluted culture was further diluted by adding 99ml of buffer. 0.5 ml of final culture was plated on to an agar plate. Then, 200 colonies were observed. What was the number of bacteria per ml in the original culture?
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0.2 ml of a microbial culture was diluted by adding 9.8ml of buffer to 10 ml. 0.1ml of this was further diluted by adding 9.9 ml of buffer to 10 ml. Plating 0.5 ml from 2nd tube yields 80 colonies. Cell density in original culture was ____________ x 104 cells. (Round off to one decimal place)
Volume of a single microbial cell is 10-3 um3. The number of cells present in its 5ml of culture will be_______________ 1015 cells. (Answer should be an integer)
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Microbiology MCQ 2
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