1. 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   Hint Half-n-half Clue   2. 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   3. What does transformation involve in Bacteria ?   the creation of a strand of RNA from DNA   the creation of a strand of DNA from RNA   assimilation of external DNA into a cell   the infection of cells by a phage DNA molecule   Half-n-half Clue   4. 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   5. 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 III   DNA Polymerase II   DNA Polymerase I   Primase   Half-n-half Clue   6. In 1940, Nobel Laureate Barbara McClintock discovered sequences of DNA that can move around to different positions within the genome of a single cell and cause mutations. These sequences (first observed in maize) are called :   Transposons   inverted repeats   direct repeats   sticky ends   Half-n-half Clue   7. A major difference between DNA replication in prokaryotes and eukaryotes is :   prokaryotes do not use Topoisomerase in the replication process   there is only one replication origin in prokaryotes.   replication is conservative in prokaryotes   DNA amylase performs the function of DNA helicase in prokaryotes   Half-n-half Clue