A single base pair of DNA weighs 1.1 × 10-21 grams. How many picomoles of a plasmid vector of length 2750 bp are contained in 1 μg of purified DNA?

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Q. A single base pair of DNA weighs 1.1 × 10-21 grams. How many picomoles of a plasmid vector of length 2750 bp are contained in 1 μg of purified DNA?

(A) 0.3
(B) 0.55
(C) 0.25
(D) 0.91

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✅ Correct Answer: (B) 0.55

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