The human body is said to contain approximately 50.0 grams of DNA in the entire body. If the number of nucleotides in ONE STRAND of DNA is approximately 3.0 x 106, and the average molar mass of a nucleotide is 327 g/mol, what is the average molar mass of an entire DNA double helix?
C5H10O4 + 4 C5H5N2O2 + 4 C5H5N5 + 3 C5H5N5O + 3 C4H5N3O + 12 H3PO4 → C137H178O106N52P12 + 12 H2O + 12 H2
d-ribose thymine adenine guanine cytosine 14 nucleotide DNA
double helix
To find the average molar mass of an entire DNA double helix, we need to calculate the total number of nucleotides in the DNA double helix and then multiply it by the average molar mass of a nucleotide.
Given:
- The number of nucleotides in one strand of DNA is approximately 3.0 x 10^6.
- The average molar mass of a nucleotide is 327 g/mol.
Since DNA has two strands, the total number of nucleotides in the double helix is twice the number in one strand, which is 2 * 3.0 x 10^6 = 6.0 x 10^6 nucleotides.
Now, we can calculate the average molar mass of the DNA double helix by multiplying the total number of nucleotides by the average molar mass per nucleotide:
Average Molar Mass = Total Number of Nucleotides × Average Molar Mass per Nucleotide
Average Molar Mass = 6.0 x 10^6 nucleotides × 327 g/mol
Calculating the product,
Average Molar Mass = 1962000000 g/mol
Therefore, the average molar mass of an entire DNA double helix is approximately 1.962 x 10^9 g/mol.