Exam 3

A  structural locus

B  operator

C  regulator

D  promoter

E  terminator

A  gel electrophoresis

B  recombinant DNA

C  biotechnology

D  genetic engineering

E  gene probes

A  All of the choices are correct

B  air

C  liquids

D  medical instruments

E  human tissues

A  disinfection

B  antisepsis

C  sanitization

D  sterilization

E  degermation

A  requires RNA polymerase

B  occurs before translation

C  proceeds in the 5′ to 3′ direction of the growing mRNA molecule

D  requires a template DNA strand

E  occurs on a ribosome in the cytoplasm

A  form pairs by hydrogen bonding

B  they are only present in the form of purines

C  adenine pairs with thymine

D  cytosine and thymine are pyrimidines

E  guanine pairs with uracil

A  hepatitis C virus

B  influenza A virus

C  herpes zoster virus

D  HIV

E  respiratory syncytial virus

A  messenger RNA

B  ribozymes

C  ribosomal RNA

D  primer RNA

E  transfer RNA

A  allylamines

B  echinocandins

C  macrolide polyenes

D  azoles

A  E-test

B  Kirby-Bauer

C  Therapeutic index (TI)

D  MIC

E  Antibiogram

A  unzips DNA

B  adds bases to new DNA chain

C  synthesizes RNA primer

D  removes primers

A  therapeutic index (TI)

B  E-test

C  MIC

D  antibiogram

E  Kirby-Bauer

A  fungal

B  bacterial

C  protozoan

D  helminthic

E  viral

A  thermal death time (TDT)

B  sporicidal time

C  thermal death point (TDP)

D  death phase point

A  codon

B  anticodon

C  intron

D  exon

A  activate

B  denature

C  dissolve

D  bind

A  sanitization

B  sterilization

C  degermation

D  antisepsis

E  disinfection

A  joins Okazaki fragments

B  synthesizes primer

C  adds new bases and proofreads new DNA

D  removes primer

E  unzips the DNA helix

A  griseofulvin

B  metronidazole

C  sulfa drugs

D  amphotericin B

E  nystatin

A  Radiation

B  Filtration

C  Sterilization

D  Disinfection

E  Boiling

A  prebiotics

B  competitive inhibition

C  lantibiotics

D  synergism

E  prophylaxis

A  target the cell wall

B  are semisynthetic

C  have resistance to the action of penicillinase

D  have an expanded spectrum of activity

E  All of the choices are correct.

A  Are genes coding for RNA

B  Is inherited

C  Are structural genes coding for proteins

D  Are the expressed traits governed by the genes

E  Are regulatory genes controlling gene expression

A  bactericidal

B  bacteriostatic

C  sterilization

D  decontamination

E  None of the choices are correct

A  sulfa drugs

B  amphotericin B

C  griseofulvin

D  metronidazole

E  nystatin

A  sanitization

B  disinfection

C  sterilization

D  ionization

E  antisepsis

A  exon

B  operon

C  operator

D  promoter

E  intron

A  Missense

B  Silent

C  Point

D  Back

E  Nonsense

A  the leading strand is synthesized continuously toward the replication fork, whereas the lagging strand extends away from the fork and is synthesized in short segments called Okazaki fragments

B  the leading strand is made in the 5′-3′ direction by DNA polymerase III, whereas the lagging strand is synthesized in the opposite direction, 3′-5′

C  only the lagging strand requires a primer for each of the Okazaki fragments; the leading strand does not require a primer to begin synthesis of the daughter strand

D  the leading strand is synthesized away from the fork and is made in short segments called Okazaki fragments whereas the lagging strand extends continuously toward the replication fork

A  disinfection

B  sanitization

C  sterilization.

D  degermation

E  antisepsis

A  damage cell membranes

B  interfere with elongation of peptidoglycan

C  block folic acid synthesis

D  attach to the 30S ribosomal subunit and disrupt protein synthesis

E  block peptidases that cross-link glycan molecules

A  penicillin G

B  synercid

C  isoniazid

D  vancomycin

E  aminoglycosides

A  disrupting membrane integrity

B  blocking transport out from the organism

C  coating the organism, preventing interaction with its environment

D  blocking transport into the organism

A  decontamination

B  sterilization

C  degerming

D  antisepsis

E  disinfection

A  batch pasteurization

B  flash pasteurization

C  pasteurization

D  ultra high temperature

A  plasmids

B  chromosomes

C  mitochondrial DNA

D  All of the choices are correct.

E  chloroplast DNA

A  genome

B  DNA

C  phenotype

D  chromosome

A  Insertion

B  Nonsense

C  Silent

D  Deletion

E  Missense

A  thermal death time (TDT)

B  sporicidal time

C  thermal death point (TDP)

D  death phase point

E  None of the choices are correct

A  transcription

B  replication

C  mitosis

D  translation

E  mutation

A  pyrimidine

B  protein

C  purine

D  amino acid

E  nucleotide

A  drug toxicity

B  allergic reactions

C  superinfections

D  nephrotoxicity

E  mutation

A  gene; complement

B  codon; anticodon

C  anticodon; codon

D  codon; DNA triplet

A  does not have thymine

B  has uracil

C  All of the choices are correct.

D  is typically one strand of nucleotides

E  has ribose

A  phenotype

B  gene

C  genotype

D  chromosome

A  Glutaraldehyde

B  Betadine (povidone-iodine)

C  Iodophor

D  3% hydrogen peroxide

E  Chlorhexidine

A  bacteria in a biofilm exist only on synthetic surfaces such as catheters, so they cannot be treated with antibiotics

B  organisms in a biofilm develop antibiotic resistance more rapidly than free-living cells

C  when part of a biofilm community, the bacterial cells express different genes thus changing their antibiotic susceptibility

D  the organisms in the biofilm degrade the antibiotics at a much faster rate than their free-living counterparts

A  sulfhydryl

B  nonpolar covalent

C  peptide

D  hydrogen

A  disinfection

B  antisepsis

C  sanitization

D  ionization

A  Sporicide

B  Fungicide

C  Bactericide

D  Germicide