front 1 A gene is best defined as | back 1 a sequence of nucleotides in DNA that codes for a functional product |
front 2 Which of the following statements about DNA is TRUE | back 2 a) DNA polymerase joins nucleotides in one direction only b) The leading strand of DNA is made continuously c) the lagging strand of DNA is started by an RNA primer d) multiple replication forks are possible on a bacterial chromosome |
front 3 DNA is constructed of | back 3 two strands of nucleotides running antiparellel |
front 4 Which of the following is NOT a product of transcription | back 4 a new strand o DNA |
front 5 Which of the following is a product of transcription | back 5 a) rRNA b) tRNA c) mRNA |
front 6 Which of the following about bacteriocins are TRUE | back 6 a) the genes coding for them are on plasmids b) Nisin is a bacteriocin used as food preservative c) they can be used to identify certain bacteria d) bacteriocins kill bacteria |
front 7 When glucose is high, cAMP is _______: CAP ________bind the lac operator, and RNA polymerase _____ bind the lac promoter | back 7 cAMP is low CAP does not RNA polymerase does not |
front 8 Transformation is the transfer fo DNA from a donor to a recipient cell | back 8 as naked DNA in solution |
front 9 Genetic change in bacteria can be brought about by | back 9 a) mutation b) conjugation c) transduction d) transformation |
front 10 Which of the following regarding a bacterium that is R+ is True | back 10 a) It possesses a plasmid b) R+ can be transferred to a cell of the same species c) it is resistant to certain drugs and heavy metal d) R+ can be transferred to a different species |
front 11 The initial effect of ionizing radiation on a cell is | back 11 the formation of highly reactive ions |
front 12 According to the operon model, for the synthesis of an inducible enzyme to occur, the | back 12 substrate must bind to the repressor |
front 13 Synthesis of a repressible enzyme is stopped by the | back 13 corepressor-repressor complex binding to the operator |
front 14 The damage caused by ultraviolet radiation is | back 14 cut out and replaced |
front 15 Conjugation differs from reproduction because conjugation | back 15 transfers DNA horizontally, to cells in the same generation |
front 16 if you mix the DNA polymerase Thermus aquaticus and the template from human cell. The DNA synthesized would be most similar to | back 16 human DNA |
front 17 An enzyme that makes covalent bonds betwwen nucleotide sequences in DNA is | back 17 DNA ligase |
front 18 An enzyme that copies DNA to make a molecule of RNA is | back 18 RNA polymerase |
front 19 An enzyme that catalyzes the cutting and resealing of DNA, and is translated from insertion sequences is | back 19 transposase |
front 20 Repair of damage DNA might be viewed as a race between an endonuclease and | back 20 methylase |
front 21 The miRNAs in a cell | back 21 allow different cells to produce different proteins |
front 22 Protein synthesis in eukaryotes is similar to the process in prokaryotes in that both | back 22 use codons to determine polypeptide sequences |
front 23 Recombination will always alter a cell's genotype | back 23 TRUE |
front 24 Bacteria contain multiple chromosomes | back 24 FALSE |
front 25 Mutation that are harmful to cells occur more tan those that benefit cells | back 25 TRUE |
front 26 Some organisms contain multiple genomes | back 26 FALSE |
front 27 Both base substitution and frameshift mutations can result in the formation of premature stop codon | back 27 TRUE |