1 Name the general category into which double stranded circular extrachromosomal DNA elements such as F factors ColE1 and R would fall A capsid B r determinant C plaque D partial diploid E plasmid 2 Bacteriophages engage in two interactive cycles with bacteria What are these cycles A lytic and lysogenic B insertion and replication C auxotrophic and prototrophic D heteroduplex and homoduplex E negative and positive 3 A bacteriophage that is capable of entering either a lytic or lysogenic cycle is called a an A temperate bacteriophage B virulent bacteriophage C plasmid D episome E plaque forming unit 4 The clearing made by bacteriophages in a lawn of bacteria on an agar plate is called a A clear zone B lysogenic zone C prophage D plaque E host range Copyright 2014 Pearson Education Inc 1 5 Temperate phages are those that can enter either the or cycle A lytic lysogenic B virulent avirulent C functional nonfunctional D former nonformer E complementing competing 6 Name two forms of recombination in bacteria A lytic and lysogenic B auxotrophic and prototrophic C conjugation and transduction D mixed and generalized E insertion and replication 7 Transduction is a form of recombination in bacteria that involves A 5 bromouracil B F plasmids C bacteriophages D fertility factors E physical contact between the bacteria involved 18 What is a form of recombination in bacteria that involves the F plasmid Conjugation 25 Bacteria that are in a particular physiological state to become transformed are called competent cells 26 What is meant by the term Cotransformation Cotransformation occurs when several linked genes are transformed simultaneously 31 What is a bacteriophage A bacteriophage is a virus that has a bacterium as its host 32 Bacteriophages that cannot undergo lysogeny but can infect bacteria are called virulent 33 What term is used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host Lysogenic Copyright 2014 Pearson Education Inc 2 34 When a bacteriophage genome incorporates itself into the chromosome of the host that phage genome is referred to as a an prophage 35 What is a significant difference between a lytic and a lysogenic cycle In the lytic cycle the phage genome does not insert into the bacterial chromosome In the lysogenic cycle the phage genomes inserts into the bacterial chromosome 37 A form of bacterial recombination that involves a viral intermediate is called transduction 38 In a bacterial cross in which the donor Hfr is a b and the recipient strain F is a b it is expected that recombinant bacteria will all be a b FALSE 39 An Hfr cell can initiate chromosome transfer from one E Coli to another TRUE 46 Lysogeny is most likely associated with transduction TRUE 47 Cotransduction of genes is an indication that the genes are linked TRUE Copyright 2014 Pearson Education Inc 3