A DNA sample contains 21% adenine. What is the complete percentage base composition?
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A DNA sample contains 21% adenine. What is the complete percentage base composition?
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- A double-stranded DNA molecule is 1 cm long, and the percentage of adenine is 15%. How many cytosines does this DNA molecule contain?If the length of E.coli DNA is 1.36 mm, calculate the number of base pairs it containsOne gram of cultured human cells contains about 109 cells and occupies roughly 1 mL. If the average molecular mass of a base pair is 660 daltons and each cell contains 6.4 x 109 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread, would it be long enough to reach from the Earth to the Moon (385,000 kilometers)?
- A circular double-stranded DNA molecule contains 4200 base pairs. In solution, the molecule is in a B-form helix, with about 10.5 base pairs per turn. The DNA circle has 12 superhelical turns. What is its superhelix density σ ?How many GB is a DNA?A circular, double-stranded DNA contains 2100 base pairs. The solution conditions are such that DNA has 10.5 bp/turn. (a) What is Lo for this DNA? (b) The DNA is found to have 12 left-handed superhelical turns. What is the superhelix density o?
- A B-DNA molecule has 1 million nucleotide pairs. How many complete turns of the helix are there in this molecule?One gram of cultured human cells contains about 10^9 cells and occupies roughly 1 mL. if the average molecular mass of a base is 660 daltons and each cell contains 6,4 *10^9 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread. Would it be long enough to reach from the Earth to the Moon (385.000 kilometers).IF A DOUBLE-STRAND DNA SAMPLE WAS COMPOSED OF 10 PERCENT THYMINE, WHAT WOULD BE THE PERCENTAGE OF GUANINE?