Test
Module 2 Exam
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Preguntas del test (45)
1The typical bacterial nucleoid contains a DNA molecule associated with molecules of protein and RNA and surrounded by a nuclear envelope.
- AVerdadero
- BFalso
2If the sugar lactose is present in a bacterial cell, the repressor protein of the LAC Operon will be bound to lactose by-products, rather than to the LAC Operon's operator region.
- AVerdadero
- BFalso
3_____ is the process of transferring genetic information from a DNA molecule to a complementary mRNA molecule.
- ATransformation
- BTranslation
- CTranscription
- DTransposition
4Which of the following forms of horizontal gene transfer relies on viral infection of prokaryotic c ells?
- ATransformation
- BTransduction
- Cconjugation
- DTransposition
5_________ plasmids carry genes for proteinaceous toxins that kill similar cells lacking the plasmid.
- AFertility
- BResistance
- CBacteriocin
- DVirulence
6PASTUERIZATION results in complete STERILIZATION of food products.
- AVerdadero
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7______ is the reduction of a prescribed number of pathogens from surfaces and utensils in public settings, such as restaurants.
- ADisinfection
- BDegerming
- CSanitization
- DPasteurization
8Which of the following procedures involves the combination of high temperature and high pressure?
- AAutoclaving
- Bboiling
- CDry heat
- DDegerming
9An ENVELOPED virus is generally more susceptible to disinfecting agents than is an UNENVELOPED/NAKED virus.
- AVerdadero
- BFalso
10Which of the following groups is considered to be the most resistant to antimicrobial agents/disinfectants?
- AMycobacteria (ex. M. tuberculosis)
- BActive-stage protozoa (Trophozoites)
- CFungi
- DEnveloped Virus
11Which of the following agents would be most beneficial at increasing the effectiveness of DEGERMING activities?
- APhenol
- BHalogens
- COxidizing agents
- DSurfactants
12DECIMAL REDUCTION TIME is the time required to destroy ___ of the microbes in a sample through heat-related methods.
- A50%
- B75%
- C90%
- D100%
13Refrigeration tends to SLOW the growth of bacteria, rather than killing them.
- AVerdadero
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14______ may be used to sterilize heat-sensitive equipment and large objects, but are potentially carcinogenic.
- AAlcohols
- BSurfactants
- CHeavy-metal ions
- DGaseous agents
15ANTIMICROBIAL DRUGS may include substances produced naturally by microbes, natural substances that have been chemically modified, and substances that have been synthesized in the laboratory.
- AVerdadero
- BFalso
16____ are chemically modified antibiotics.
- AAntimicrobial agents
- BAntibiotics
- CSemisynthetics
- DSynthetics
17PENICILLIN works by _____.
- Ainhibiting protein synthesis.
- Bdisrupting the cell membrane.
- Cinhibiting cell wall synthesis.
- Dpreventing attachment of bacteria to host cells.
18Which of the following is NOT a mechanism normally used by bacteria to resist antimicrobial drugs?
- AProduction of enzymes that deactivate the drug.
- BConversion of the drug into a substance which is beneficial to the cell.
- CSlow or prevent entry of the drug into the cell.
- DAlteration of the drug target.
19A mutation of the PORINS of a gram-negative cell outer membrane could lead to antibiotic resistance using which of the following mechanisms?
- AProduction of enzymes that deactivate the drug.
- BConversion of the drug into a substance which is beneficial to the cell.
- CSlow or prevent entry of the drug into the cell.
- DAlteration of the drug target.
20The principle of SELECTIVE TOXICITY states that an antimicrobial agent should be more toxic to a pathogen than to the pathogen's host.
- AVerdadero
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21_____ determine the smallest amount of a drug that will inhibit bacterial growth and reproduction.
- ADiffusion susceptibility tests
- BMinimum inhibitory concentration tests
- CMinimum bactericidal concentration tests
- DEtests
22ANTIFUNGAL drugs generally show a higher degree of SELECTIVE TOXICITY than ANTIBACTERIAL drugs.
- AVerdadero
- BFalso
23A BROAD-SPECTURM drug is more likely to disrupt normal microbiota than is a NARROW-SPECTURM drug.
- AVerdadero
- BFalso
24The ___ route of drug administration would achieve the most rapid and sustained high levels of drug in the patient's bloodstream.
- AOral
- BIntramuscular
- COne-time intravenous
- DContinuous intravenous
25Differences in the size and shape of ____ allow for the use of drugs that attack prokaryotic cells but leave eukaryotic host cells relatively unaffected.
- AThe Golgi apparatus
- BThe endoplasmic reticulum
- CRibosomes
- DDNA nucleotides
26Members of the genus ____ are gram-positive, spore-forming, obligate anaerobic rods which may cause illnesses including botulism, tetanus, and food poisoning.
- AClostridia
- BMycoplasma
- CListeria
- DStaphlyococcus
27Which of the following bacterial groups lack cell walls, form distinctive "fried-egg" colonies on diagnostic growth media, and includes species that may cause a form of bacterial pneumonia in humans?
- ABetaproteobacteria
- BActinomycdetes
- CMycoplasmas
- DCyanobacteria
28Which of the following genera include species that cause Rocky Mountain Spotted Fever and Typhus?
- ARickettsia
- BBrucella
- CLeigionella
- DCoxiella
29Species in the genus ___ cause Q Fever.
- ARickettsia
- BBrucella
- CLeigionella
- DCoxiella
30____ causes Whooping Cough.
- ABordetella pertussis
- BRickettsia spp.
- CNeisseria gonorrhoeae
- DLegionella spp.
31The feeding stage of a protozoa is called a/an ____.
- Akinetoplast
- Bcyst
- Ceuglenid
- Dtrophozoite
32____ contain the polysaccharide chitin in their cell walls
- AFungi
- BProtozoa
- CParasitic worms
- DBacteria
33This KINETOPLASTID protozoa may cause 2 main modes of disease: cutaneous sores and visceral infection.
- ATrypanosoma cruzi
- BBalantidium coli
- CCryptosporidium spp.
- DLeishmania spp.
34MECHANICAL arthropod vectors serve as microbial hosts: the disease organism spends a part of its life-cycle growing in the vector.
- AVerdadero
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35TICKS are the most important arachnid disease vectors.
- AVerdadero
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36CAPSOMERES are protein sub-units making up the viral _____.
- ACapsid
- BEnvelope
- CPhage
- DNucleoid
37_____ occurs when an animal virus merges its envelope with the host cell membrane, thus dumping the capsid into the cell.
- ADirect penetration
- BMembrane fusion
- CEndocytosis
- DInjection
38____ are extremely small, circular pieces of RNA that are infectious and pathogenic in plants.
- ARNA viruses
- BViroids
- CPrions
- DVirodlike agents
39There is greater structural diversity of genetic molecules (DNA/RNA) in viruses than in living things.
- AVerdadero
- BFalso
40The genetic material of a virus, along with surrounding protective protein coat, is called the viral ____.
- ANucleus
- BCapsid
- CNucleocapsid
- DEnvelope
41ENVELOPED viruses must take the phospholipid portion of the viral envelope from the host cell membrane.
- AVerdadero
- BFalso
42Disease-causing PRIONS are similar to healthy brain proteins, except that they are folded into different shapes.
- AVerdadero
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43Lysogenic conversion may cause _______.
- Abacteria to produce toxins related to disease virulence.
- Bbacteria to insert some of their genes into the genetic material of the invading virus.
- Ca change in the phenotype of the virus.
- Dthe virus to enter the lytic stage of replication.
44Naked viruses on surfaces are generally more susceptible to disinfectants than are enveloped viruses.
- AVerdadero
- BFalso
45In the lytic replication cycle of bacteriophages, the synthetic phase proceeds soon after viral attachment and entry into the host cell.
- AVerdadero
- BFalso
Información
- Descripción
- Etiology of Infectious Diseases Test sobre Module 2 Exam, creado por Ashley Vuncannon el 09/12/2018.
- Autor
- Ashley Vuncannon
- Idioma
- English
- Visitas
- 5
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