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Descrição
Quiz por Med Student , atualizado more than 1 year ago
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Criado por Med Student
mais de 7 anos atrás
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Questão 1
Questão
Name the components of nutrient media
Responda
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Glucose Broth
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Meat-Peptone Broth
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Meat-Peptone agar
-
Blood Agar
Questão 2
Questão
Most of the bacterial colonies are visualized after:
Responda
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20 minutes
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2 hours
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1-2 days
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1 week
Questão 3
Questão
According to their cell wall structures bacteria divide into
Responda
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Aerobes and Anarobes
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Prokaryotes and Eukaryotes
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Gram (+) and Gram (-)
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Prototrophs and Auxotrophs
Questão 4
Questão
Extra chromosomal genetic elements in bacteria are
Responda
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Mesosomes
-
Phagosomes
-
Transposons
-
Plasmids
Questão 5
Questão
How many phases have growth curve of bacteria?
Ans: [blank_start]4[blank_end]
Name them:
a/ [blank_start]Lag[blank_end] Phase
b/ [blank_start]Log[blank_end] Phase
c/ [blank_start]Stationary[blank_end] Phase
d/ [blank_start]Decline[blank_end] Phase
Responda
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4
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Lag
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Log
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Stationary
-
Decline
Questão 6
Questão
Sex-pili of bacteria helps for their
Responda
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Movement
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Conjugation
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Nutrition
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Protection
Questão 7
Questão
Name the three shapes of bacteria:
a/ [blank_start]Round[blank_end] ([blank_start]Cocci[blank_end])
b/ [blank_start]Rods[blank_end]
c/ [blank_start]Spiral[blank_end] ([blank_start]Spirilli[blank_end])
Responda
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Round
-
Cocci
-
Rods
-
Spiral
-
Spirilli
Questão 8
Questão
What is the most resistant to an unappropiate conditions bacterial form?
Responda
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Vegetative
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Spore
Questão 9
Questão
Which of the following bacterial structures prevents phagocytosis?
Responda
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Cytoplasm
-
Peptidoglycan
-
Capsule
-
Nuclues
Questão 10
Questão
Are flagellas an obligatory structure of bacterium?
Responda
- True
- False
Questão 11
Questão
What chemical is responsible for the acid-fast property of mycobacteria?
Ans: [blank_start]Mycolic acids[blank_end]
Responda
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Mycolic acids
Questão 12
Questão
Name two bacteria that have capsules:
a/ [blank_start]E. coli[blank_end]
b/ [blank_start]Salmonella[blank_end]
Responda
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E. coli
-
Salmonella
Questão 13
Questão
In microbiology what is the most commonly used objective
Ans: [blank_start]Oil[blank_end]
Explain:
This is because [blank_start]oil[blank_end] unlike other liquids like water has very [blank_start]little light refraction[blank_end]
Responda
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Oil
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oil
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little light refraction
Questão 14
Questão
What is the name of staining method for Corynebacterium diphtheriae?
Responda
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Gram
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Moller
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Zhiehl-Neelsen
-
Neisser
Questão 15
Questão
Gram (+) bacteria are stained in [blank_start]blue[blank_end] colour and Gram (-) in [blank_start]red[blank_end] colour
Responda
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blue
-
red
Questão 16
Questão
The main taxonomic category for bacteria is
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Genus
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Species
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Family
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Ordo
Questão 17
Questão
According Gram, the Gram (-) bacteria are stained in [blank_start]red[blank_end] colour
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red
Questão 18
Questão
The unit for bacterial size is:
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milimeter
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micrometer
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nanometer
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angstrom
Questão 19
Questão
Vibrions are curved bacteria with
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4-6 curves
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many curves
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one curve
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two curves
Questão 20
Questão
Ziehl-Neelsen is a staining procedure in:
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encapsulated bacteria
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spore-forming bacteria
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acid-fast bacteria
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motile bacteria
Questão 21
Questão
Bacterial cytoplasm contains:
Responda
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capsule
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ribosomes
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nucleotide
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peptidoglycan
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pili
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inclusions
Questão 22
Questão
Name the purposes of simple staining:
a/ Determine cell [blank_start]shape[blank_end]
b/ Determine cell [blank_start]size[blank_end]
c/ Determine cell [blank_start]arrangement[blank_end]
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shape
-
size
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arrangement
Questão 23
Questão
The main staining procedure that detect morphology of bacteria is:
Responda
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Loeffler
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Neisser
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Gram
-
Pfeiffer
Questão 24
Questão
The name Baccilus antracis defines certain bacterial
Responda
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Genus
-
Species
-
Class
Questão 25
Questão
Is it true: Bacterial spores are formed in unfavorable conditions and are means of multiplying
Responda
- True
- False
Questão 26
Questão
Staining according Victoria blau is a [blank_start]simple[blank_end] method
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simple
-
complex
Questão 27
Questão
Which of the following organelles are essential for bacteria?
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cytoplasm membrane
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pili
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capsule
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flagella
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nucleoid
-
ribosomes
Questão 28
Questão
What are the curved bacteria?
Responda
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staphylococci
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helicobacter
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vibrions
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bacilli
Questão 29
Questão
Diplococci are [blank_start]round[blank_end] shaped bacteria that are arranged in [blank_start]pairs[blank_end]
Responda
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round
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pairs
Questão 30
Questão
Staphylococci are round shaped bacteria arranged in [blank_start]clusters[blank_end]
Responda
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clusters
Questão 31
Questão
The volutine bodies are inclusions in the cytoplasm of:
Responda
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menigococci
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diptheria bacteria
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genococci
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pneumococci
Questão 32
Questão
Where is lipopolysaccaride situated?
Responda
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in the cell wall of Gram (+) bacteria
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in the cell wall of Gram (-) bacteria
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in the both groups
Questão 33
Questão
Name at least two rod-shaped bacteria
a/ [blank_start]Bacillus anthracis[blank_end]
b/ [blank_start]Clostridium tetani[blank_end]
Responda
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Bacillus anthracis
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Clostridium tetani
Questão 34
Questão
How many spores form one bacteria?
Responda
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one
-
two
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three
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more than one
Questão 35
Questão
Loefler technique stain bacteria in [blank_start]blue[blank_end] colour
Responda
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blue
Questão 36
Questão
The causative agent of tuberculosis is stained in red color, using [blank_start]Ziehl[blank_end] [blank_start]Neelsen[blank_end] (name the staining method)
Responda
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Ziehl
-
Neelsen
Questão 37
Questão
What are the two purposes of heat fixation
a/ [blank_start]kill[blank_end] organisms
b/ allows stain to be [blank_start]absorbed[blank_end]
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kill
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absorbed
Questão 38
Questão
Each bacteria has two names and they define its
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family and genus
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family and kingdom
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genus and species
Questão 39
Questão
Bacteria cell is
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eukaryotic
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prokaryotic
Questão 40
Questão
Which of the following is NOT found in the cell wall of gram (-) bacteria?
Responda
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Lipid A
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Teichoic acids
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O-antigen
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peptidoglycan
Questão 41
Questão
Name the different types of bacteria pili and what are their function
a/ [blank_start]common[blank_end] and its function is [blank_start]adhesion[blank_end]
b/ [blank_start]sex[blank_end] and its function is [blank_start]conjugation[blank_end]
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common
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adhesion
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sex
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conjugation
Questão 42
Questão
Loeffler stain requires
Responda
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Methylene blue
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Ziehl fuschin
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Gentian violet
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Iodine solution
Questão 43
Questão
Which of the following methods of staining are complex
Responda
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Pfeiffer
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Neisser
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Klett
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Loeffler
Questão 44
Questão
Bacterium Diphteri and its structure : [blank_start]Volutine granule[blank_end]
Responda
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Volutine granule
Questão 45
Questão
The volutine granules of Bacterium Diphteri are visualized by : [blank_start]Neisser[blank_end] staining
Responda
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Neisser
Questão 46
Questão
The following structures are localized in the cytoplasm:
Responda
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Spores
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Nucleoids
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Flagellum
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Capsules
Questão 47
Questão
Based on their cellular structure bacteria are divided into:
Responda
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Cocci and rods
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Gram + and Gram –
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Spares and spiral
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Aerobes and anaerobe
Questão 48
Questão
Peptides Glycan polymer are found only in :
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Bacterial cell
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Animal cell
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In viruses
Questão 49
Questão
Chemical structure of the capsule is composed of :
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Complex polysaccharides
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Vitamins
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Polypeptides
Questão 50
Questão
Sporulation appears to be :
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An initiation of reproduction of bacterial cell
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A reaction of conditions that are unfavorable for normal growth
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A status to resist desiccation and other harmful conditions
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a & b
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b & c
Questão 51
Questão
The complete killing or removal of all microorganisms including bacteria spores is called :
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Sterilization
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Disinfection
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Antisepsis
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Sepsis
Questão 52
Questão
What is the color of the simple method of Pfeiffer staining : [blank_start]red[blank_end]
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red
Questão 53
Questão
Pfeiffer technical staining makes use of the following :
Responda
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Methylene blue
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Carbon Fuchsine
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Neutral red
-
Gentian violet
Questão 54
Questão
The cell wall of gram (+) bacteria is composed mainly :
Responda
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Hitine (typical for plants)
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Peptidoglycan (90%)
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Cellulose
-
Sugars
Questão 55
Questão
Which of the following bacteria have peptidoglycan layer:
Responda
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Gram (+) cocci
-
Gram (-) bacteria
-
Both of them
-
None above
Questão 56
Questão
Cellular DNA is concentrated in (what place) :
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Cytoplasm as a nucleoid
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Mitochondria
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Plasmids as an extra chromosomal genetic material
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Ribosomes
Questão 57
Questão
The spores stain by Moller are :
Responda
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Blue color
-
Red color
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Black color
-
Yellow color
Questão 58
Questão
Which structure is NOT protecting bacteria from phagocytosis from leukocytes:
Responda
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Spores
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Capsule
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Flagella
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Ribosome
Questão 59
Questão
Name two simple (basic) stains
a/ [blank_start]Loeffler[blank_end]
b/ [blank_start]Pfeiffer[blank_end]
Responda
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Loeffler
-
Pfeiffer
Questão 60
Questão
The concentration of ethyl alcohol as an antiseptic for disinfection is :
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95%
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70%
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50%
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30%
Questão 61
Questão
Bacterial nucleoid consists of :
Responda
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No chromosomes
-
Only one chromosome
-
Several chromosomes
Questão 62
Questão
What is the name of staining procedure for bacterial capsule:
Responda
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Gram stain
-
Loeffler stain
-
Klett stain
-
Moller stain
Questão 63
Questão
Lipopolysaccharide can be found in large amount :
Responda
-
Gram (+)
-
Gram (-)
-
Both of them
-
None of above
Questão 64
Questão
Complex method for bacterial staining are :
Responda
-
Loeffler
-
Pfeiffer
-
Gram
-
Ziehl-Neelsen
Questão 65
Questão
Bacterial antibiotic resistance is frequently covered by :
Responda
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Tempered bacteriophage
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R-plasmids
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Lipid bacteriophage
-
Intron
Questão 66
Questão
What constitutes a bacterial culture :
a/ [blank_start]Solute[blank_end]
b/ dry [blank_start]agar[blank_end]
c/ [blank_start]broth[blank_end]
Responda
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Solute
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agar
-
broth
Questão 67
Questão
Which one is a liquid medium for bacterial culture:
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Blood agar
-
Glucose broth
-
Both of them
-
None above
Questão 68
Questão
Anaerobes are bacteria that can tolerate high oxygen concentration
Responda
- True
- False
Questão 69
Questão
What bacterial physiologist studies :
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-
Morphology of bacteria
-
Bacterial structure
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Bacterial growth
-
Bacterial nutrient
Questão 70
Questão
70% ethanol is :
Responda
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Sterilizing agent
-
Antiseptic
-
Antibiotic
-
None is true
Questão 71
Questão
Which of the following is most important structure related to microbial attachment to cells :
Responda
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Flagellum
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Plasmid
-
Peptidoglycan
-
Ordinary Pilli
Questão 72
Questão
Which statement about genetic transfer among bacteria requires cell to cell contact:
Responda
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Process of conjugation
-
Process of transduction
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Process of transcription
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Process of auto combination
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Process of transformation
Questão 73
Questão
Which of the following related to endotoxin is not true:
Responda
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Endotoxins are secreted from living cells
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Endotoxins are part of cellular gram (-) bacteria
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They are secreted only when the cell is disrupted
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They can be linked to meningococcemia
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They are produced by gram(-) microorganisms
-
They cause fever
Questão 74
Questão
What cause (hint) to be pink :
Responda
-
Carbon Fuchsin
-
Iodine solution
-
Crystal violet
-
Neisser A
Questão 75
Questão
Gram (-) bacteria differ from Gram (+) ones because the posses :
Responda
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Lipopolysaccharide
-
Peptidoglycan
-
Only cytoplasmic membrane
-
Lipoteichoic acid
Questão 76
Questão
The auto-sterilisation requires the following :
Responda
-
1:30 hours at 160 C
-
134 C for 10-15 minutes
Questão 77
Questão
The chlorine is :
Responda
-
Antiseptic
-
Disinfectant
-
Chemical agent for sterilization
-
All of above
Questão 78
Questão
Concerning bacterial cell division everything is true except that :
Responda
-
All bacteria double their numbers every 10 hours
-
Bacterial generation times are influenced by environmental conditions
-
Two bacterial cells following division are genetically identical and they are once
Questão 79
Questão
How does high temperature cause cell death?
Responda
-
Oxidative damage
-
High level of electrolytes
-
Protein denature
-
All of above
Questão 80
Questão
How are the actions of phenols and alcohols similar :
Responda
-
Both denature proteins
-
Both oxidize DNA
-
Both inhibit nucleic acid synthesis
-
All of above
Questão 81
Questão
What is pasteurization :
Responda
-
A method that disinfects the instruments
-
Sterilizes food
-
A method that can be used on skin and mucus
-
All of above
Questão 82
Questão
Bacterial flagella are :
Responda
-
Composed of pillin
-
A floppy structure made of flagellin
-
Rigger structure made of flagellin
Questão 83
Questão
Name the complex nutrient media :
Responda
-
Glucose broth
-
Mid peptone broth
-
Mid peptone agar
-
Blood agar
Questão 84
Questão
Extra chromosomal genetic elements in bacteria are :
Responda
-
Mesosomes
-
Phagosomes
-
Transposomes
-
Bacteriophages ( or plasmids)
Questão 85
Questão
What part of the bacterial cell is most involved with Gram staining and why?
Ans: [blank_start]Cell wall[blank_end]
Explanation: Gram [blank_start]positive[blank_end] bacteria have a [blank_start]thick[blank_end] peptidoglycan cell [blank_start]wall[blank_end] that holds the stain [blank_start]better[blank_end] than the [blank_start]thin[blank_end] peptidoglycan gram [blank_start]negative[blank_end] cell [blank_start]wall[blank_end]
Responda
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positive
-
thick
-
wall
-
better
-
thin
-
negative
-
wall
-
Cell wall
Questão 86
Questão
What is the purpose of heat during the acid-fast staining procedure?
The heat [blank_start]drives[blank_end] the stain [blank_start]into[blank_end] the cells
Responda
-
drives
-
into
Questão 87
Questão
Name two curved bacteria:
a. [blank_start]Vibrio Cholerae[blank_end]
b. [blank_start]Helicobacteria[blank_end]
Responda
-
Vibrio Cholerae
-
Helicobacteria
Questão 88
Questão
Name the reagent used and state the purpose of each of the following
a/ mordant: Reagent- [blank_start]Iodine[blank_end] solution, Function: form a [blank_start]complex[blank_end] between the crystal violet and [blank_start]iodine[blank_end]
b/ primary stain: Reagent- [blank_start]Gentian Violet[blank_end], Function: increases the [blank_start]contrast[blank_end] of both gram-negative and gram-positive bacteria
c/ decolorizer: Reagent- [blank_start]Alcohol[blank_end], Function: [blank_start]dehydrates[blank_end] the peptidoglycan layer
d/ counterstain: Reagent- [blank_start]carbol fuschin[blank_end], Function: stains solution light [blank_start]red[blank_end] allowing Gram [blank_start]negative[blank_end] to be seen
Responda
-
Alcohol
-
Iodine
-
complex
-
iodine
-
Gentian Violet
-
contrast
-
dehydrates
-
carbol fuschin
-
red
-
negative
Questão 89
Questão
Round bacteria in chains are named [blank_start]streptococci[blank_end]
Responda
-
streptococci
Questão 90
Questão
What suggestions about endotoxins are true?
a/ they are typical for [blank_start]Gram (-)[blank_end]
b/ they act [blank_start]non-specific[blank_end]
c/ their chemical structure is [blank_start]lipopolysaccarides[blank_end]
d/ they are heat [blank_start]stable[blank_end]
Responda
-
Gram (-)
-
Gram (+)
-
non-specific
-
specific
-
lipopolysaccarides
-
proteins
-
stable
-
labile
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