Discussion
Which of the following techniques can be performed quantitatively to count bacteria of a particular type?
Answer: C
Correct answer: Both (a) and (b)
Pour plate and spread plate are both quantitative: a measured volume of a known dilution is plated, the colonies are counted, and multiplying back gives the count in the original sample. The streak plate is qualitative - it separates organisms to obtain pure colonies, but nothing about it measures how many there were.
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