A bacterium has a genome size of 6.0 X 106 base pairs. There is one Origin of Replication (ORI) and each DNA polymerase catalyzes the addition of 1,000 nucleotides/second. How much time is needed to replicate the entire genome?

time=6E6 pairs/(1000n/sec*2pair/n)

= 3000seconds (check that math)
http://book.bionumbers.org/how-long-does-it-take-cells-to-copy-their-genomes/

To calculate the time needed to replicate the entire genome of a bacterium, we can use the following steps:

Step 1: Determine the total number of nucleotides in the genome.
Given that the bacterium has a genome size of 6.0 x 10^6 base pairs, and a base pair consists of two nucleotides, we can calculate the total number of nucleotides by multiplying the genome size by two:
Total number of nucleotides = 6.0 x 10^6 base pairs × 2 nucleotides/base pair = 1.2 x 10^7 nucleotides.

Step 2: Calculate the rate of nucleotide addition by a DNA polymerase.
Given that each DNA polymerase can catalyze the addition of 1,000 nucleotides per second, we can use this information to determine the time it takes for one DNA polymerase to replicate the entire genome.

Step 3: Divide the total number of nucleotides by the rate of nucleotide addition to find the time required.
Time needed to replicate the genome = Total number of nucleotides ÷ Rate of nucleotide addition
= 1.2 x 10^7 nucleotides ÷ 1,000 nucleotides/second

Now, let's calculate the time needed:

Time needed to replicate the genome = 1.2 x 10^7 nucleotides ÷ 1,000 nucleotides/second

Therefore, the time needed to replicate the entire genome of the bacterium is 12,000 seconds or 12 seconds.