Term
Small proteinaceous appendages in bacteria that function in DNA exchange are called conjugation:
a. fimbraie
b. pili
c. inclusions
d. plasmids |
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Definition
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Term
Chemotaxis is best defined as directed:
a. reproduction
b. proetein systhesis
c.metabolism
d. movement |
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Definition
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Term
1. shaped like a corckscrew
2. variation in shape
3.curved (comma-shaped) rod)
4. spherical bacterial in long chains
5. small rod or flattened sphere shape
a. coccobacillus
b. pleopmorphic
c. streptococci
d.spirilla
e.vibrio |
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Definition
1. D, spirilla
2. B, pleomorphic
3. E, vibrio
4. A, streptococci
5. C, coccobacillus |
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Term
True or False
Bacteria can have on to dozens of chromosomes, depending on the species |
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Definition
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Term
True or False
The phospholipids of bacterial membranes contain both hydrophobic and hydrophilic portions |
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Definition
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Term
Which environmental condition favors the trophozoite form in protozoa?
a. lack of nutrients
b. high moisture
c.presence of drugs of chemicals
d.none of the above |
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Definition
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Term
A FUNGAL FILAMENT IS CALLLED AN:
a. mycelium
b. hypha
c.euphnium
d.spore |
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Definition
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Term
1. Pathogenic forms are usually spread in vectors
2. single celled with no cell wall
3. carry out photosynthesis
4. usually have hyphae
a. algae
b. protozoa
c.fungi
d.helminths |
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Definition
1.B, protozoa
2. B, protozoa
3. A, Algae
4. D, fungi |
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Term
cestodes and trematodes are types of
a. fungi
b. bacteria
c.protozoa
d.helminths |
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Definition
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Term
most vectors are
a. insects
b. non-living
c.fungi
d.bacteria |
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Definition
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Term
True or False
Prokaryotes have DNA, but it is not contained inside a nucleues |
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Definition
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Term
True or False
Meiosis occurs in both sex cells and somatic (non-sex or body) cell |
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Definition
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Term
A naked virus is missing
a. capsid
b. nucleic acid
c. a cirion
d. an envenlope |
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Definition
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Term
Which is enzyme is required to be present in a minus strand RNA virus?
a. RNA- dependent RNA polymerase
b. DNA-dependent RNA polymearse
c.DNA dependent DNA polymerase
d.RNA dependent DNA polymerase |
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Definition
b, DNA dependent RNA polymerase |
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Term
1. binds enveloped viruses to host cells
2.can consist of a protein coat and DNA
3. Formed from host cell membrane
4. Binds unenveloped viruses to hosts
a. capsid
b. nucleiocapsid
c.envenlope
d.spikes |
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Definition
1. D, spikes
2. B, nucleocapsid
3.C, envenlope
4. A, capsid |
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Term
Animal (including human viruses usually penetrte a host cell by
a. injection
b. exocytosis
c.pili
d.endocytosis |
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Definition
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Term
The abnormal products of oncogenes have been shown to
a. enhance the antiviral activity of antiviral drugs
b. stimulate viral growth within bacteria
c.convert protein to DNA in viruses
d.encourage cell transformation in cancers |
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Definition
D, encourages cell transformation in cancers |
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Term
Host range refers to
a. types of viruses that a species can host
b. types of host a virus can infect
c.tyoes of viral nucleic acid
d.insects that carry a virus |
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Definition
B types of host a virus can infect |
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Term
True or False
The slow release of enveloped viruses over a long period of time is characteristic of a persistent infection |
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Definition
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Term
True or False
Viruses can contain DNA or DNA buth not both
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Definition
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Term
True or False
Viral genes carry information to invade host cells and direct viral assembly, but cannot multiply without host cell machinery |
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Definition
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Term
1. Destruction of most microorganisms and viruses on non living surface.
2. removal of pathogens from objects to meet public health standard
3.use of heat to slow spolage in foods and beverages.
4. reduction of all microorganism and viruses, espcially pathogens, on living tissue
5. deduction of all microorganism and viruses in or on an object.
a.anitsepsis
b.sterilization
c. disinfection
d. pasteurization
e. sanitization |
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Definition
1. C, disinfection
2. E, Sanitization
3. D pasteurization
4. A, antisepsis
5. B, sterilization |
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Term
an autoclave use ______ to kill microorganisms
a. heat
b. pressure
c. both a and b
d. neither a nor b |
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Definition
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Term
Which of the following is most effective for sterilizing mattresses and plastic Petri dishes?
a. autoclaving
b. incineration
c. ethylene oxide gas
d. pasteurization |
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Definition
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Term
The pheno coefficient is an indicator of the ____ of an antimicorbial chemical
a. classification
b. strength
c. alcohol content
d. color
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Definition
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Term
Silver nitrate is given to newborns in the hospital to prevent blindness. silver nitrate is an:
a. alohol
b. heavy metal
c. phenolic compound
d. halide |
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Definition
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Term
True or False
Gamma rays can be used to sterilize some items |
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Definition
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Term
True or False
A bactericidial compound prevents the groeth of bacteria but doesnt kill them
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Definition
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Term
1. Inhibit cell wall synthesis
2. inhibit protein synthesis
3. disrupt cell membranes
4. inhibit nucleic acid synthesis
5. block production of folic acid
a. beta(symbol)-lactam drugs
b.polymyxin B
c. quinolones
d. aminoglycosides
e. sulfa drugs |
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Definition
1. A, Beta lactam drugs
2. D, aminoglycosides
3. B, polymyxin B
4. C, quinoles
5. E, sulfa drugs |
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Term
A clear zone around an antibiotic disc on baceria-covered agar indicates the bacteria are ____ the drug
a. sensitive to
b. resistant to
c. reserviors of
d. not effected by |
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Definition
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Term
Which of the following is not a mechanism for antiviral drugs?
a. inhibits uncoating
b. inhibits nucleic acid synthesis
c. inhibits membrane synthesis
d. inhibits release of virus
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Definition
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Term
The use of a drug to prevent imminet infection of a person at risk is called
a. anaphylaxis
b. narrow spectrum
c. prophylaxis
d. antisepsis
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Definition
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Term
chloramphenicol binds to the 50S ribosomal subunit, which interferes with
a. prokaryotic transcription
b. eukaryotic transcription
c. prokaryotic translation
d. eukaryotic translation |
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Definition
c prokaryotic translation |
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Term
Resistance to antibacterial drugs can be obtained by
a. mutation
b. conjugation (plasmiod)
c. bacterial structure
d. all the above
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Definition
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Term
a series of dilutions of antibiotics is made (1/2, 1/4, 1/8, 1/16 etc.) and the same number of bacteria put in each tube. At 1/64, there is turbidity (cloudiness) in the tube. The minimum concertration is
a. 1/2
b.1/4
c. 1/32
d. 1/64 |
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Definition
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Term
selecive toxicity means a drug is effective against ___ but not against __
a. gram +: gram -
b. bacteria: viruses
c. pathogens: host
d. viruses: bacteria |
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Definition
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Term
T or F
A broad spectrum antibiotic is active against a variety of pathogens |
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Definition
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Term
T or F
An R factor is a type of plasmid that confers antibiotic release
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Definition
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Term
T or F
An antimicrobial drug that precents bacteria from increasing amount of peptidoglycan would be classified as bacteria
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Definition
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Term
WHich of the foloowing is the substance referred to as endotoxin
a. streptolysin
b. cogulase
c.collagenase
d. lipopolysaccharide |
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Definition
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Term
Which of the following would be a symptom of a disease?
a. sore throat
b. chest sounds (rales)
c. skin rash
d. leukocytosis |
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Definition
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Term
Door knobs, money, toys, and toilet seats are all examples of
a. prophylactics
b. zoonose
c. vector
d. fomites |
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Definition
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Term
Which of the following is not a virulence factor?
a.toxins
b. adhesion factors
c.extracellular enzymes
d. anti-phagocytosis
e. all of these a virulent factors |
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Definition
e all are virulence factors |
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Term
A bacterial capsule
a. inhibits phagocytosis
b. acts as an enzyme
c. increase phagocystosis
d. is released by dead bacteria |
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Definition
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Term
Koch's postulate determines
a. if a microbe is an oppurtunist
b. if a microbe is a virus
c. if a persons immune system works
d. if a microbe causes disease |
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Definition
d. if a microbe cause disease |
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Term
WHich of the following statements is the best definition of an pandemic?
a. it normally occurs in a given geographic area
b. it is a disease that occurs more frequently than usal for a geographical are or group of people
c. it occurs infrequently at not predictable time scatterd over a large area or population
d. it is an epidemic that occurs on more than one continent at the same time |
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Definition
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Term
normal microbiota on the skin:
a. dont causes diesease ever
b. are oppurtunist only
c. can cause disease when the skin is broken
d. includes mostly viruses |
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Definition
C can cause disease when the skin is broken |
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Term
Prope hand washing and asceptic techniques greatly reduce the likelihood of medical professionals serving as ____ carries
a.latent
b. active
c. passive
d. convalescent |
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Definition
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Term
which of the following has no normal flora?
a. distal (outer) uretha
b. bladder
c. skin
d. outer eye |
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Definition
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Term
Botulism toxin is released by clostridium perfringes, a gram positive rod.Botulism is an
a. exotoxin
b. endotoxin
c.extracellular enzyme
d. capsule component |
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Definition
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Term
Normal microbiota that can cause disease under certain cirumstances are
a.gram + bacteria only
b/ gram- bacteria only
c. oppurtunist
d.fungi only |
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Definition
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Term
T or F
convalescent carries cannot pass pathogens to suspectible hosts |
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Definition
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Term
T or F
Humans and microorganism can live in closse association without causing disease? |
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Definition
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Term
T or F
WHite blood cells capable of engulfing microorganism are called phagocytes |
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Definition
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Term
T or F
House flies can pick up pathogens on their legs and deposit them on food. House flies would be classified as biological, rather than mechanical, vectors |
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Definition
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