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The length of one DNA nucleotide was measured at 3.3 × 10^-10 metres. Calculate the approximate length of a gene containing 250 nucleotides in nanometres. (2)

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To calculate the approximate length of a gene containing 250 DNA nucleotides in nanometers, you can multiply the length of one nucleotide by the number of nucleotides in the gene:

Length of one nucleotide = 3.3 × 10^-10 meters
Number of nucleotides in the gene = 250

Length of the gene = (3.3 × 10^-10 meters/nucleotide) * 250 nucleotides

Now, calculate the length:

Length of the gene = (3.3 × 10^-10 meters/nucleotide) * 250 nucleotides
Length of the gene = 8.25 × 10^-8 meters

To express this length in nanometers, you can convert meters to nanometers by multiplying by 10^9 since 1 meter = 10^9 nanometers:

Length of the gene in nanometers = (8.25 × 10^-8 meters) * (10^9 nanometers/meter)

Now, calculate the length in nanometers:

Length of the gene in nanometers = 8.25 × 10^1 nanometers
Length of the gene in nanometers = 82.5 nanometers

So, the approximate length of the gene containing 250 nucleotides is approximately 82.5 nanometers.
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