61.  The process in which mutations are removed and the correct bases added is called  
A.  Transduction
B.  Excision repair
C.  Frameshift
D.  Back-mutation
E.  Transformation

62.  Bacterial conjugation involves  
A.  Bacteriophage carrying donor DNA to the recipient cell
B.  A donor cell with a plasmid that synthesizes a pilus
C.  Naked DNA fragments from a lysed donor cell are taken up by a recipient cell
D.  New progeny cells with genes from two parent bacterial cells
E.  None of the choices are correct

63.  Which cell can transfer the most DNA?  
A.  F⁺ cell
B.  F^– cell
C.  Hfr cell
D.  R cell
E.  B cell

64.  Which of the following is not a type of bacterial DNA recombination?  
A.  Transformation
B.  Conjugation
C.  Mitosis
D.  Transduction
E.  None of the above

65.  Which of the following is not true of conjugation?  
A.  Involves direct contact between cells
B.  Transfers genes for drug resistance
C.  Transfers genes for enzymes and adherence molecules
D.  Transfers genes for a polysaccharide capsule
E.  The donor retains a copy of the transferred genes

66.  Hfr transfer involves all of the following except  
A.  Gene integration into the bacterial chromosome
B.  Plasmid gene transfer
C.  F factor is part of the F+ donor chromosome
D.  High frequency transfer
E.  A pilus connection between F+ and F- cells

67.  The transfer of DNA fragments from a dead cell to a live, competent recipient cell that results in a changed recipient cell is  
A.  Transduction
B.  Conjugation
C.  Transformation
D.  Transmission
E.  Mitosis

68.  The development of virulent, toxin-producing bacterial strains due to the presence of a temperate phage can occur in  
A.  Bacterial conjugation
B.  Transformation
C.  Generalized transduction
D.  Specialized transduction
E.  All of the choices are correct

69.  A bacteriophage transfers DNA of the previous host to the current host. This is an example of  
A.  Conjugation
B.  Generalized transduction
C.  Specialized transduction
D.  Creation of an Hfr cell
E.  None of the choices are correct

70.  The jumping of a gene from one location to another is done by  
A.  Conjugation
B.  Transposons
C.  Transformation
D.  Transduction
E.  Transmission

71.  Which of the following is not true of transposons?  
A.  Can change pigmentation
B.  Can replace damaged DNA
C.  Can transfer drug resistance
D.  Can change the genome
E.  Are always part of plasmids

72.  Which of the following additions have been made to principles of the central dogma of biology?  
A.  DNA information cannot be converted into RNA information
B.  Protein information can be converted into DNA information
C.  RNA can be used to regulate gene function
D.  DNA codes for proteins
E.  All of these

73.  In Griffith’s experiments with Streptococcus pneumoniae, rough non-encapsulated Streptococci were converted into smooth encapsulated Streptococci in the presence of the heat- killed smooth encapsulated Streptococci. What is the term that describes this process?  
A.  transduction
B.  conjugation
C.  transformation
D.  cloning

74. Of the following list, which antibiotics affect protein synthesis? 
A. penicillin
B. tetracycline
C. chloramphenicol
D. ciprofloxacin
E. Both B and C