Pregunta 1
Pregunta
Obligate intracellular parasite
Respuesta
-
Organisms that can only grow inside another living host.
-
Viruses that infect bacteria.
-
Viral replication cycle that ends in the death of the host cell.
Pregunta 2
Respuesta
-
Viruses that infect bacteria.
-
Organisms that can only grow inside another living host cell.
-
Viral replication cycle that ends in death of its host cell.
Pregunta 3
Respuesta
-
Viral replication cycle that ends in death of its host cell.
-
Organisms that can only grow inside another living host cell.
-
Viruses that infect bacteria.
Pregunta 4
Pregunta
How does a medium used for bacterial growth differ from media used for bacteriophage growth?
Respuesta
-
Use ordinary media to grow bacteria but, a bacteriophage needs a host cell.
-
Use ordinary media to grow bacteriophages but, bacteria needs a host cell.
Pregunta 5
Pregunta
What is the purpose of making serial dilutions of the T-4 phage?
Respuesta
-
To obtain a countable plate of 30 - 300 plaques.
-
To obtain a countable plate of 30 - 300 colonies.
-
To obtain a countable plate of 30 - 300 individual viruses.
Pregunta 6
Pregunta
What is a viral plaque and what does it represent?
Respuesta
-
An area of clearing on an agar representing a spot where a virus landed, infected a bacteria and lysed it.
-
An area on an agar representing a spot where a bacteria landed, infected a virus and lysed it.
-
An area on an agar representing a spot where a virus landed, infect a yeast and lysed it.
Pregunta 7
Pregunta
What purpose does the E. coli serve in this procedure?
Respuesta
-
It is the host cell for the T4 bacteriophage
-
It is the host cell of the T4 bacteria.
-
It is the host cell of the T4 fungus.
Pregunta 8
Pregunta
Explain why Coccidioides immitis is considered to be a dimorphic fungus.
Respuesta
-
It can grow as a yeast and as a mold.
-
It can grow as a yeast and a virus.
-
It can grow as a mold and a virus.
Pregunta 9
Pregunta
What are the growth differences between fungus and bacteria?
Respuesta
-
Fungi grow faster, at a lower temperature and at a lower pH than bacteria.
-
Fungi grow faster, at a higher temperature and at a higher pH than bacteria.
-
Fungi grow slower, at a lower temperature and at a lower pH than bacteria.
-
Fungi grow slower, at a higher temperature and at a higher pH than bacteria.
Pregunta 10
Pregunta
Staphylococcus and Micrococcus are"
Respuesta
-
Gram (+) cocci in clusters
-
Gram (-) cocci in clusters
-
Staphylococcus is gram (+) in clusters and Micrococcus is gram (-) in pairs
-
Staphylococcus is gram (-) in clusters and Micrococcus is gram (+) in pairs
Pregunta 11
Pregunta
Where are Staphylococcus and Micrococcus normally found in the body?
Respuesta
-
Skin and mucus membranes
-
Intestines
-
Gastrointestinal tract
-
Skin and hair
Pregunta 12
Pregunta
Where are Staphylococcus and Micrococcus normally found in the body?
Respuesta
-
Skin and mucus membranes
-
Intestines
-
Gastrointestinal tract
-
Skin and hair
Pregunta 13
Pregunta
People that harbor the pathogen but exhibit no symptoms.
Respuesta
-
Carrier
-
MRSA
-
Nosocomial
-
Giver
Pregunta 14
Pregunta
Methicillin-resistant Staphylococcus aureus
Pregunta 15
Pregunta
Hospital acquired
Respuesta
-
Nosocomial
-
Carrier
-
Giver
-
Catalase
Pregunta 16
Pregunta
Which substances that Staphylococcus aureus produce to cause disease
Respuesta
-
Catalase
-
Coagulase
-
Hyaluronidase
-
Carilase
Pregunta 17
Pregunta
When do staphylococcus epidermidis and Micrococcus cause disease?
Pregunta 18
Pregunta
Differentiate the colony appearance of Staphylococcus and Streptococcus
Respuesta
-
Staph are larger, convex, opague and pigmented, Strep are smaller, translucent to slightly opaque.
-
Strep are larger, convex, opague and pigmented, Straph are smaller, translucent to slightly opaque.
-
Staph are smaller, convex, opague and pigmented, Strep are larger, translucent to slightly opaque.
Pregunta 19
Pregunta
Which enzyme helps differentiate all staphylococci from streptococci?
Respuesta
-
Catalase
-
Streptocase
-
Staphoolase
Pregunta 20
Pregunta
How did Lancefield divide the beta-hemolytic streptococci into groups?
Respuesta
-
C polysaccharide extracted from the cell walls
-
Peptidoglycan extracted from the cell walls
-
Lipids extracted from the cell walls
Pregunta 21
Pregunta
What is the species name of Lancefield Group A streptococci.
Pregunta 22
Pregunta
What is the species name of Lancefield Group B streptococci?
Respuesta
-
Streptococcus agalaticae
-
Streptococcus aureus
-
Streptococcus pyogenes
-
Streptococcus cocci
Pregunta 23
Pregunta
Where are Enterococcus normally found int he body?
Respuesta
-
Gastrointestinal tract
-
Skin and mucus
-
Liver
-
Kidneys
Pregunta 24
Respuesta
-
Vancomycin resistant enterococcus
-
Vancomycin resistant ebolacoccus
-
Vancomycin resistant enteroboccus
Pregunta 25
Pregunta
Viridans streptococci
Respuesta
-
Alpha hemolytic streptococci other than streptococcus pneumonea
-
Beta hemolytic streptococci other than streptococcus pneumonea
-
Alpha heolytic staphylococci other than staphylococcus pneumonea
-
Beta heolytic staphylococci other than staphylococcus pneumonea
Pregunta 26
Pregunta
Group A Strep causes __________________
Pregunta 27
Pregunta
Group B Strep causes _____________
Pregunta 28
Pregunta
Enterococcus causes _________________
Respuesta
-
Urinary tract infection
-
Dental cavities
-
Strep throat
-
Neonatal speticemia
Pregunta 29
Pregunta
Streptococcus pneumoniae causes _________________
Pregunta 30
Pregunta
Viridans streptococci
Respuesta
-
Dental cavities
-
Strep throat
-
Urinary tract infection
-
Neonatal septicemia
Pregunta 31
Pregunta
Why is Coccidioides immitis considered to be a dimorphic fungus?
Pregunta 32
Pregunta
What are the growth factors between fungus and bacteria?
Respuesta
-
Fungi grow slower, at a lower temp and lower pH than bacteria
-
Fungi grow faster, at a higher temp and higher pH than bacteria
-
Fungi grow slower, at a higher temp and lower pH than bacteria
-
Fungi grow faster, at a lower temp and higher pH than bacteria
Pregunta 33
Pregunta
Explain the difference between vegetative hyphae and aerial hyphae.
Pregunta 34
Pregunta
The difference between sporangiospores and conidiospores:
Pregunta 35
Pregunta
How are molds identified in the laboratory?
Respuesta
-
Macroscopic appearance
-
Microscopic appearance
-
Hyphal structure
Pregunta 36
Pregunta
What are the characteristics of Enterobacteriacea?
Pregunta 37
Pregunta
What are the characteristics of non-fermenters?
Pregunta 38
Pregunta
What are the two major groups of gram (-) rods?
Respuesta
-
Enterobacteriacaea
-
Non-fermenters
-
Staphylococcus
-
Streptococcus
Pregunta 39
Pregunta
Which carbohydrate is used to determine whether a gram negative rod is a "Nonfermenter" or "Enterobacteriacae"?
Pregunta 40
Pregunta
What carbohydrate(s) are in the Kigler Iron Agar media?
Respuesta
-
Glucose
-
Lactose
-
Sucrose
-
Galactose
Pregunta 41
Pregunta
What carbohydrate(s) are in the MacConkey agar?
Respuesta
-
Glucose
-
Lactose
-
Sucrose
-
Galactose
Pregunta 42
Pregunta
Why is MacConkey agar considered to be a selective and differential media?
Respuesta
-
It is selective because it contains bile salts and crystal violet which inhibit the growth of gram (+) organisms. It is differential because it contains lactose making it differential for lactose fermentation.
-
It is selective because it contains bile salts and crystal violet which inhibit the growth of gram (-) organisms. It is differential because it contains lactose making it differential for lactose fermentation.
-
It is differential because it contains bile salts and crystal violet which inhibit the growth of gram (+) organisms. It is selective because it contains lactose making it differential for lactose fermentation.
-
It is differential because it contains bile salts and crystal violet which inhibit the growth of gram (-) organisms. It is selective because it contains lactose making it differential for lactose fermentation.
Pregunta 43
Pregunta
How many types of organisms will you identify in the mixed unknown exercise?
Pregunta 44
Pregunta
What type of organism grows on MacConkey agar?
Pregunta 45
Pregunta
What ingredient on the MacConkey agar will differentiate the organisms growing on the agar?
Pregunta 46
Pregunta
What type of organism grows on CNA?
Pregunta 47
Pregunta
What ingredient in the CNA media allows differentiation of the organisms growing on the agar?
Pregunta 48
Pregunta
Why is CNA media incubated in a candle jar?
Pregunta 49
Pregunta
Why is a cotton swab used to obtain the sample from the original broth?
Respuesta
-
To make sure we get both organisms from the mixed culture
-
To make sure enough sample is collected
-
To make it easier to inoculate the media
Pregunta 50
Pregunta
Why is T. soy agar used to grow the "stock cultures"?
Respuesta
-
It's a neutral media that all bacteria like
-
It is a selective media that only gram (-) bacteria like.
-
It is a selective media that only gram (+) bacteria like.
Pregunta 51
Pregunta
Why do you need to develop two flow charts in order to identify your unknown organisms?
Respuesta
-
You have to develop a dichotomous key for each of your unknown organisms and we have two organisms.
-
You have to develop a dichotomous key for each depending on the outcome of growth on the selective media.
Pregunta 52
Pregunta
What is an "enteric" organism?
Pregunta 53
Pregunta
How are culture media designed to detect if a bacteria can produce a specific enzyme?
Respuesta
-
Substrates are incorporated into the culture media that the enzymes act upon and that along with indicator system lets you see the products.
-
Enzymes are incorporated into the media and an indicator systems lets you see if they match the organism.
Pregunta 54
Pregunta
What is the purpose of the Durham tube in the carbohydrate fermentation tubes?
Pregunta 55
Pregunta
Name the specific tests that are part of the IMViC test
Respuesta
-
Indole
-
Methyl red
-
Voges-Proskauer
-
Citrate
-
Urease
Pregunta 56
Pregunta
Name 3 Enterobacteriaceae normally found in the gastrointestinal tract.
Respuesta
-
E. coli
-
Enterobacter aerogenes
-
Proteus vulgaris
-
Salmonella
-
Klebsiella pneumoniae
-
Shigella
Pregunta 57
Pregunta
Name two Enterobacteriaceae that are major pathogens and state the disease they cause.
Respuesta
-
Salmonella - Gastroenteritis, typhoid fever
-
Shigella - Bacterial dysentery
-
E. coli - Gastroenteritis, typhoid fever
-
Proteus vulgaris - Bacterial dysentery
Pregunta 58
Pregunta
Which commercial test systems are used to identify gram (-) rods in clinical labs?
Respuesta
-
Entero tube
-
API
-
20E
-
Micro ID
-
Micro tube
-
APE
Pregunta 59
Pregunta
Why do you use the streak-stab method for blood agar inoculations?
Pregunta 60
Pregunta
Where do you grow streptococcus and why?
Pregunta 61
Pregunta
Which bacteria are alpha and optochin sensitive?
Respuesta
-
Streptococcus pneumoniae
-
Streptococcus mitis
-
Streptococcus pyogenes
-
Group C Streptococcus
-
Enterococcis faecalis
Pregunta 62
Pregunta
Which bacteria are and optochin resistant?
Respuesta
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Streptococcus pyogenes
-
Group C Streptococcus
-
Enterococcus faecalis
Pregunta 63
Pregunta
Which bacteria are beta and bacitracin sensitive?
Respuesta
-
Streptococcus pyogenes
-
Streptococcus pneumoniae
-
Streptococcus mitis
-
Group C Streptococcus
-
Enterococcus faecalis
Pregunta 64
Pregunta
Which bacteria are beta and bacitracin resistant?
Respuesta
-
Group C Streptococcus
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Enterococcus faecalis
-
Streptococcus pyogenes
Pregunta 65
Pregunta
How do you tell the difference between the alpha hemolytic Streptococcus and and Enterococcus faecalis?
Pregunta 66
Pregunta
How does the catalase test differentiate between Staphylococcus and Streptococcus?
Pregunta 67
Pregunta
What kind of hemolysis is shown on this plate?
Respuesta
-
Alpha hemolyisis
-
Beta Hemolysis
-
Gamma Hemolysis
Pregunta 68
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillis
-
Penicillium
-
Rhizopus
Pregunta 69
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 70
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 71
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhuzopus
Pregunta 72
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 73
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 74
Pregunta
What is the mold pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 75
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 76
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 77
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 78
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 79
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 80
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 81
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 82
Pregunta
What mold is pictured?
Respuesta
-
Aspergillus
-
Penicillium
-
Rhizopus
Pregunta 83
Pregunta
Is this result positive or negative for beta lactamase?
Pregunta 84
Pregunta
Is this result positive or negative for beta lactamase?
Pregunta 85
Pregunta
What are the results of the bile esculin test pictured?
Respuesta
-
A = negative, B = positive
-
A = positive, B = negative
Pregunta 86
Pregunta
What are the results of the carbohydrate fermentation pictured?
Respuesta
-
A = negative, B = positive, C = positive + gas
-
A = positive, B = negative, C = negative +gas
Pregunta 87
Pregunta
What are the results of the citrate test pictured?
Respuesta
-
A = negative, B = positive
-
A = positive, B = negative
Pregunta 88
Pregunta
What are the results of the indole test pictured?
Respuesta
-
A = negative, B = positive
-
A = positive, B = negative
Pregunta 89
Pregunta
What is the result of the lactose fermentation pictured?
Respuesta
-
A = negative, B = positive, C = positive
-
A = negative, B = negative, C = positive
-
A = positive, B = negative, C = negative
-
A = positive, B = positive, C = negative
Pregunta 90
Pregunta
What are the results of the motility test pictured?
Respuesta
-
A = non-motile, B = motile, C = motile
-
A = non-motile, B = non-motile, C = motile
-
A = motile, B =motile, C = non-motile
-
A = motile, B = non-motile, C = non-motile
Pregunta 91
Pregunta
What are the results of the sensitivity test pictured?
Respuesta
-
A = sensitive, B = resistant
-
A = resistant, B = sensitive
Pregunta 92
Pregunta
How do you calculate the titer of phage in the original sample given the number of plaques and the dilution of the plate?
Pregunta 93
Pregunta
What kind of hemolysis is pictured?
Pregunta 94
Pregunta
Which bacteria is cogulase positive and manitol slat agar positive?
Pregunta 95
Pregunta
Which bacteria is coagulase negative and manitol salt agar negative?
Pregunta 96
Pregunta
What bacteria is positive for nitrate reduction and rose for pigment production?
Pregunta 97
Pregunta
What bacteria is negative for nitrate reduction and yellow for pigment production?
Pregunta 98
Pregunta
How is Enterococcus faecalis differentiated from other alpha hemolytic streptococcus?
Pregunta 99
Pregunta
Which Streptococcus bacteria is optochin resistant?
Respuesta
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Streptococcus pyogenes
-
Group C streptococcus
Pregunta 100
Pregunta
Which streptococcus bacteria is optochin sensitive?
Respuesta
-
Streptococcus pneumoniae
-
Streptococcus mitis
-
Streptococcus pyogenes
-
Group C Streptococcus
Pregunta 101
Pregunta
Which bacteria is bacitration resistant?
Respuesta
-
Group C Streptococcus
-
Streptococcus pyogenes
-
Streptococcus pneumoniae
-
Streptococcus mitis
Pregunta 102
Pregunta
Which bacteria is bacitracin sensitive?
Respuesta
-
Streptococcus pyogenes
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Group C Streptococcus
Pregunta 103
Pregunta
Which bacteria are alpha hemolytic?
Respuesta
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Streptococcus pyogenes
-
Group C Streptococcus
Pregunta 104
Pregunta
Which bacteria are beta hemolytic?
Respuesta
-
Streptococcus mitis
-
Streptococcus pneumoniae
-
Streptococcus pyogenes
-
Group C Streptococcus
Pregunta 105
Pregunta
What hemolysis is pictured?
Respuesta
-
A= alpha, B = beta, C = gamma
-
A = beta, B = alpha, C = gamma
-
A = gamma, B = alpha, C = beta