1. A major difference between DNA replication in prokaryotes and eukaryotes is :   DNA amylase performs the function of DNA helicase in prokaryotes   there is only one replication origin in prokaryotes.   prokaryotes do not use Topoisomerase in the replication process   replication is conservative in prokaryotes   Hint Half-n-half Clue   2. 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   3. An enzyme (used by all retroviruses) that transcribes genetic information of the virus from RNA into DNA, is :   Reverse transcriptase   RNA polymerase   Restriction nuclease   Methylase   Half-n-half Clue   4. 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 :   DNA Polymerase II   Helicase   Topoisomerase   Primase   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. An enzyme that recognizes and cuts DNA only at a particular sequence of nucleotides is often called :   Restriction endonuclease   RNA polymerase   Photolyase   DNA glycosylase   Half-n-half Clue   7. Which of the following agents is not a mutagen ?   Ultraviolet radiation   A retrovirus   A transposon or jumping gene   None of the above   Half-n-half Clue