Exam 3

A  operator

B  promoter

C  terminator

D  regulator

E  structural locus

A  biotechnology

B  genetic engineering

C  gene probes

D  recombinant DNA

E  gel electrophoresis

A  medical instruments

B  All of the choices are correct

C  liquids

D  human tissues

E  air

A  disinfection

B  degermation

C  sanitization

D  sterilization

E  antisepsis

A  occurs on a ribosome in the cytoplasm

B  occurs before translation

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

D  requires a template DNA strand

E  requires RNA polymerase

A  adenine pairs with thymine

B  guanine pairs with uracil

C  cytosine and thymine are pyrimidines

D  form pairs by hydrogen bonding

E  they are only present in the form of purines

A  HIV

B  hepatitis C virus

C  influenza A virus

D  respiratory syncytial virus

E  herpes zoster virus

A  messenger RNA

B  transfer RNA

C  primer RNA

D  ribosomal RNA

E  ribozymes

A  macrolide polyenes

B  azoles

C  allylamines

D  echinocandins

A  MIC

B  Therapeutic index (TI)

C  Kirby-Bauer

D  Antibiogram

E  E-test

A  synthesizes RNA primer

B  adds bases to new DNA chain

C  removes primers

D  unzips DNA

A  E-test

B  Kirby-Bauer

C  antibiogram

D  MIC

E  therapeutic index (TI)

A  viral

B  fungal

C  protozoan

D  bacterial

E  helminthic

A  thermal death point (TDP)

B  thermal death time (TDT)

C  sporicidal time

D  death phase point

A  exon

B  anticodon

C  codon

D  intron

A  denature

B  bind

C  activate

D  dissolve

A  degermation

B  sanitization

C  disinfection

D  antisepsis

E  sterilization

A  synthesizes primer

B  removes primer

C  unzips the DNA helix

D  adds new bases and proofreads new DNA

E  joins Okazaki fragments

A  metronidazole

B  sulfa drugs

C  amphotericin B

D  nystatin

E  griseofulvin

A  Disinfection

B  Radiation

C  Sterilization

D  Filtration

E  Boiling

A  prophylaxis

B  prebiotics

C  synergism

D  lantibiotics

E  competitive inhibition

A  All of the choices are correct.

B  target the cell wall

C  have an expanded spectrum of activity

D  are semisynthetic

E  have resistance to the action of penicillinase

A  Are structural genes coding for proteins

B  Is inherited

C  Are regulatory genes controlling gene expression

D  Are genes coding for RNA

E  Are the expressed traits governed by the genes

A  bactericidal

B  None of the choices are correct

C  bacteriostatic

D  decontamination

E  sterilization

A  nystatin

B  metronidazole

C  griseofulvin

D  amphotericin B

E  sulfa drugs

A  disinfection

B  ionization

C  sterilization

D  sanitization

E  antisepsis

A  operon

B  operator

C  intron

D  promoter

E  exon

A  Point

B  Back

C  Missense

D  Nonsense

E  Silent

A  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

B  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

C  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

D  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′

A  sterilization.

B  sanitization

C  disinfection

D  degermation

E  antisepsis

A  block peptidases that cross-link glycan molecules

B  damage cell membranes

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

D  block folic acid synthesis

E  interfere with elongation of peptidoglycan

A  vancomycin

B  synercid

C  aminoglycosides

D  penicillin G

E  isoniazid

A  coating the organism, preventing interaction with its environment

B  blocking transport into the organism

C  disrupting membrane integrity

D  blocking transport out from the organism

A  decontamination

B  sterilization

C  degerming

D  antisepsis

E  disinfection

A  ultra high temperature

B  batch pasteurization

C  pasteurization

D  flash pasteurization

A  chromosomes

B  chloroplast DNA

C  mitochondrial DNA

D  plasmids

E  All of the choices are correct.

A  phenotype

B  chromosome

C  DNA

D  genome

A  Nonsense

B  Silent

C  Insertion

D  Missense

E  Deletion

A  thermal death time (TDT)

B  None of the choices are correct

C  sporicidal time

D  death phase point

E  thermal death point (TDP)

A  mutation

B  transcription

C  translation

D  mitosis

E  replication

A  pyrimidine

B  purine

C  nucleotide

D  protein

E  amino acid

A  superinfections

B  allergic reactions

C  nephrotoxicity

D  drug toxicity

E  mutation

A  codon; anticodon

B  anticodon; codon

C  gene; complement

D  codon; DNA triplet

A  has uracil

B  is typically one strand of nucleotides

C  has ribose

D  does not have thymine

E  All of the choices are correct.

A  gene

B  phenotype

C  genotype

D  chromosome

A  3% hydrogen peroxide

B  Iodophor

C  Glutaraldehyde

D  Chlorhexidine

E  Betadine (povidone-iodine)

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

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

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

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

A  hydrogen

B  sulfhydryl

C  peptide

D  nonpolar covalent

A  disinfection

B  antisepsis

C  sanitization

D  ionization

A  Bactericide

B  Germicide

C  Fungicide

D  Sporicide