DNA polymerase III Select one: a. is needed for adding nucleotides during mRNA synthesis. b. synthesizes new DNA only in the 5' to 3' direction. c. cannot add nucleotides to the lagging strand. d. synthesizes an RNA primer. Clear my choice Previous page

b. synthesizes new DNA only in the 5' to 3' direction.

Explanation:

DNA Polymerase III is involved in replication of DNA, it is involved in the proofreading of the replication mistakes by activity reading 3' to 5' and synthesizing 5' to 3' . It can add nucleotides to the strand at the rate of about 1000  nucleotides per second.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the fossil record provides evidence of a common ancestor to many species.