1. Because DNA polymerase III can only act from 5' to 3', continuous strand growth can be achieved only along one of the template strands (Leading strand) and strand growth along the other strand must occur discontinuously resulting in the production of a series of short sections of new DNA called :   Replicon fragments   Okazaki fragments   Klenow fragments   None of the above   Hint Half-n-half Clue   2. The enzyme that stitches Okazaki fragments together (along the lagging strand) is called :   Topoisomerase   DNA Polymerase II   DNA Ligase   Holoenzyme   Half-n-half Clue   3. DNA Polymerase III is actually an aggregate of several different protein subunits. So it is often called a :   Holoenzyme   Primeosome   replisome   None of the above   Half-n-half Clue   4. The enzyme responsible for initiating the unwinding of double-stranded DNA (eliminating supercoiling) by nicking a single strand of the DNA molecule is :   Ligase   Helicase   Gyrase   Topoisomerase   Half-n-half Clue   5. The end of a DNA strand that has a phosphate group attached to the number 5 carbon of its terminal deoxyribonucleotide is called :   The 5 prime end (5')   The 3 prime end (3')   N-Terminus   C-Terminus   Half-n-half Clue   6. A repeating DNA sequence at the end of chromosomes that prevents them from losing base pair sequences at their ends and from fusing together is called :   A Telomere   A Telomerase   A replicon   None of the above.   Half-n-half Clue   7. A mamalian cell typically has 1.2 meters (when completely outstretched) of double stranded DNA.The total time to duplicate the DNA is 5 hours. How many origins of replication are there if the rate of duplication is 16µmeters/min ?   250   15000   1   500   Half-n-half Clue