1. The enzyme that (during replication) proceeds along one of the strands of a DNA molecule adding deoxy-nucleotide-triphosphates to hydrogen bond with their appropriate complementary dNTP on the other single strand and to form a covalent phosphodiester bond with the previous nucleotide of the same strand is called :   DNA Polymerase II   Primase   DNA Polymerase I   DNA Polymerase III   Hint Half-n-half Clue   2. The enzyme responsible for initiating the unwinding of double-stranded DNA (eliminating supercoiling) by nicking a single strand of the DNA molecule is :   Gyrase   Topoisomerase   Ligase   Helicase   Half-n-half Clue   3. The enzyme (made of proteins and RNA) that elongates chromosomes by adding TTAGGG sequences to the end of existing chromosomes is :   Telomerase   Exonuclease   Endonuclease   Amylase   Half-n-half Clue   4. The enzyme that creates a short RNA oligonucleotide at initiation sites where replication is to be carried out is called :   Primase   DNA Ligase   DNA Gyrase   Exonuclease   Half-n-half Clue   5. The enzyme that accomplishes the unwinding of the original double stranded DNA molecule, once supercoiling has been eliminated, by breaking the hydrogen bonds that hold the two strands together is :   Primase   Topoisomerase   Helicase   DNA Polymerase II   Half-n-half Clue   6. A major difference between DNA replication in prokaryotes and eukaryotes is :   DNA amylase performs the function of DNA helicase in prokaryotes   replication is conservative in prokaryotes   prokaryotes do not use Topoisomerase in the replication process   there is only one replication origin in prokaryotes.   Half-n-half Clue   7. 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