1. The enzyme X removes RNA primers attached by Primase and this gap is then filled in by DNA Polymerase I. The enzyme X is :   RNase H   DNA amylase   DNA ligase   Reverse Transcriptase   Hint Half-n-half Clue   2. 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   3. 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   4. 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   5. What does transformation involve in Bacteria ?   the creation of a strand of DNA from RNA   the infection of cells by a phage DNA molecule   the creation of a strand of RNA from DNA   assimilation of external DNA into a cell   Half-n-half Clue   6. 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   7. The enzyme that replaces the nucleotides of the RNA primer with the appropriate DNA nucleotides is :   DNA Polymerase II   RNA Polymerase   DNA Ligase   DNA Gyrase   Half-n-half Clue