LABCE EXAM LATEST () GRADED A+ WITH
ANSWERS
Recombinant Facto IX is indicated for which of the following - ANSWER: Hemophilia
B
Which of the following species or organisms is the most likely to cause mycotic
keratitis (fungal infection of the cornea)?
A) fusarium species
B) trichophyton rubrum
C) Scedosporium apiospermum
D) Aspergillus niger - ANSWER: Fusarium species
Which type of stain is recommended to speculate Plasmodium species?
A) thick trichromatic-stained
B) thin trichromatic-stained
C) thick iodine-stained
D) thin-stained Giemsa smears - ANSWER: Think stained Giemsa smears
Which of the following is a rapid latex agglutination method for detecting
Methicillin-Resistant Staphylococcus aureus (MRSA)?
A) Beta-Lactamase
B) Coagulase
C) Cefocitin
D) PBP2a - ANSWER: PBP2a
Which buffer additive(s) is/are used gel electrophoresis to prevent complementary
base pairing on RNA molecules by interacting with the amino groups?
A) Formamide
B) Formamide and heat
C) Urea and heat
D) Methylmercuric hydroxide - ANSWER: Methylmercuric hydroxide
Consider the following characteristics of hookworm infection. Each statement is
correct EXCEPT:
A) Filariform larvae penetrate human skin into the blood
B) Larvae are carried in the blood to the bronchial tree where they mature in the
lungs
C) Larvae are swallowed and travel to the small intestine where they mature
, D) Gadtrointestinal symptoms may include diarrhea, nausea, and hemorrhage. -
ANSWER: Larvae are carried in the blood to the bronchial tree where they mature in
the lungs
Each of the following laboratory characteristics can be used to separate Bacteroides
fragility from the closely related Prevotella/Porphyromonas group of anaerobic
EXCEPT:
A) indole production
B) produce brick red fluorescence under UV light
C) Growth in 20% bile
D) Esculin hydrolysis - ANSWER: Indole production
The calcofluor white stain can be used not only to help in the identification of fungi
but can be used to visualize which of the following?
A) bacteria
B) Mycobacteria
C) Microsporidia
D) Amoeba - ANSWER: Microsporidia
A tech working in the laboratory receives a call from the floor. The nurse needs to
preform a VRE screen on the patient and needs to know what type of specimen to
collect. Which of the following is an appropriate specimen for VRE screening?
A) blood
B) nasal swab
C) rectal swab
D) CSF - ANSWER: Rectal swab
Elizabethkingia is a new genus name for the bacterium formerly called
Chryseobacterium meningosepticum, an important agent of neonatal meningitis
(now E. Meningoseptica). What biochemical characteristic is unique for the family
Flavobacteriaceae among the nonfermenters?
A) indole production
B) Esculin hydrolysis
C) Glucose oxidation
D) Resistance to penicillin - ANSWER: Indole production
Which of these methods are used to identify prior exposure to Mycobacterium
tuberculosis?
A) Tuberculin skin test (TST) or blood tests known as interferon-gamma release
assays
B) gram stain
C) white blood cell count
ANSWERS
Recombinant Facto IX is indicated for which of the following - ANSWER: Hemophilia
B
Which of the following species or organisms is the most likely to cause mycotic
keratitis (fungal infection of the cornea)?
A) fusarium species
B) trichophyton rubrum
C) Scedosporium apiospermum
D) Aspergillus niger - ANSWER: Fusarium species
Which type of stain is recommended to speculate Plasmodium species?
A) thick trichromatic-stained
B) thin trichromatic-stained
C) thick iodine-stained
D) thin-stained Giemsa smears - ANSWER: Think stained Giemsa smears
Which of the following is a rapid latex agglutination method for detecting
Methicillin-Resistant Staphylococcus aureus (MRSA)?
A) Beta-Lactamase
B) Coagulase
C) Cefocitin
D) PBP2a - ANSWER: PBP2a
Which buffer additive(s) is/are used gel electrophoresis to prevent complementary
base pairing on RNA molecules by interacting with the amino groups?
A) Formamide
B) Formamide and heat
C) Urea and heat
D) Methylmercuric hydroxide - ANSWER: Methylmercuric hydroxide
Consider the following characteristics of hookworm infection. Each statement is
correct EXCEPT:
A) Filariform larvae penetrate human skin into the blood
B) Larvae are carried in the blood to the bronchial tree where they mature in the
lungs
C) Larvae are swallowed and travel to the small intestine where they mature
, D) Gadtrointestinal symptoms may include diarrhea, nausea, and hemorrhage. -
ANSWER: Larvae are carried in the blood to the bronchial tree where they mature in
the lungs
Each of the following laboratory characteristics can be used to separate Bacteroides
fragility from the closely related Prevotella/Porphyromonas group of anaerobic
EXCEPT:
A) indole production
B) produce brick red fluorescence under UV light
C) Growth in 20% bile
D) Esculin hydrolysis - ANSWER: Indole production
The calcofluor white stain can be used not only to help in the identification of fungi
but can be used to visualize which of the following?
A) bacteria
B) Mycobacteria
C) Microsporidia
D) Amoeba - ANSWER: Microsporidia
A tech working in the laboratory receives a call from the floor. The nurse needs to
preform a VRE screen on the patient and needs to know what type of specimen to
collect. Which of the following is an appropriate specimen for VRE screening?
A) blood
B) nasal swab
C) rectal swab
D) CSF - ANSWER: Rectal swab
Elizabethkingia is a new genus name for the bacterium formerly called
Chryseobacterium meningosepticum, an important agent of neonatal meningitis
(now E. Meningoseptica). What biochemical characteristic is unique for the family
Flavobacteriaceae among the nonfermenters?
A) indole production
B) Esculin hydrolysis
C) Glucose oxidation
D) Resistance to penicillin - ANSWER: Indole production
Which of these methods are used to identify prior exposure to Mycobacterium
tuberculosis?
A) Tuberculin skin test (TST) or blood tests known as interferon-gamma release
assays
B) gram stain
C) white blood cell count
