microbiology

Question 11.4 PointsThe B-lymphocyte

Is thymus derived.
Matures in the thymus gland in all birds and mammals.
When activated will divide and form specialized plasma cells which produce antibodies. 
Engages in a spectrum of immune functions characterized as cell-mediated immunity.

Question 21.4 PointsThe absence of hemolysis on a blood agar plate is referred to as _______ hemolysis

Alpha
Beta
Gamma
Delta

Question 31.4 PointsMicrobial resistance to drugs is acquired through

Conjugation
Transformation
Transduction
All of these answers contribute

Question 41.4 PointsThe field of study in which medicine and microbiology intersect is known as medical microbiology

True
False

Question 51.4 PointsAll of the following are methods that can be used to isolate bacteria from a mixed culture EXCEPT

Streak plating
Loop dilution pour plating
Gram staining
Serial dilution followed by spread plating

Question 61.4 PointsThe progeny cells of a B cell clone are called

Antibodies.
Activated macrophages.
Sensitized T cells.
Bursa cells.
Plasma cells. 

Question 71.4 PointsMannitol salt agar is used to select strains of staphylococci from streptococci and enterococci within the sample.

True
False

Question 81.4 PointsBefore attempting to identify an unknown bacterial species using traditional methods, the organism must be isolated in a pure culture.

True
False

Question 91.4 PointsNatural passive immunity involves the passing of antibodies from mother to infant and acts immediately but is short-lived.

True
False

Question 101.4 PointsKey historical discoveries leading to the field of medical microbiology include all but which of the following:

Koch’s postulates
Lister’s development of aseptic technique
Mendel’s principles of genetics
Leeuwenhoek’s discovery of animalcules under the microscope

Question 111.4 PointsAny clear zone of inhibition around an antibiotic disc being used for identification is a clear indication that the organism is sensitive to the antibiotic.

True
False

Question 121.4 PointsA vaccine that contains a protein conjugated to a capsule polysaccharide is called

Acellular
Attenuated
Conjugate
Subunit

Question 131.4 PointsFive classes of antibodies include

IgG, IgA, IgM, IgD, and IgE
IgA, IgB, IgD, IgE, and IgM
IgB, IgC, IgD, IgE, and IgM
IgG, IgB, IgM, IgD, and IgE

Question 141.4 PointsThe _________ test involves using rabbit plasma as a reagent and its results are determined by observation of thickening of the medium.

Catalase
Oxidase
Coagulase
Peroxidase

Question 151.4 PointsThe majority of white blood cells in circulation include

Neutrophils and lymphocytes.
Eosinophils and basophils.
Macrophages.
Erythrocytes.

Question 161.4 PointsCharacteristics of an ideal antimicrobial drug include all EXCEPT

Toxic to the specific microbe but nontoxic to the host
Readily delivered to the site of infection
Does not lead to the development of antimicrobial resistance
Easy to administer but able to reach the infectious agent anywhere in the body
All of the answers are correct

Question 171.4 PointsInfections that are more common during pregnancy include all the following EXCEPT

Malaria
Urinary tract infections
Candidiasis
Poliomyelitis
Syphilis

Question 181.4 PointsHow do you determine the species of an unknown bacterium?

You should make a careful investigation of the morphology of the bacterial cells using a microscope to make a firm identification.
You need to quantify the number of bacteria in the same to determine the species.
Identification can only be made based on the patient’s signs and symptoms.
You use standard tests and pre-existing knowledge to classify the bacterium.

Question 191.4 PointsType I hypersensitivities include

Hay fever
Hemolytic disease of newborns
Celiac disease
Graft rejection

Question 201.4 PointsA vaccine that contains living, non-virulent strains of a microbe is called

Acellular
Attenuated
Inactivated
Toxoid

Question 211.4 PointsThe composition of a person’s microbiome may have an important influence on the occurrence of autoimmune disorders.

True
False

Question 221.4 PointsWhich test uses a medium that is both selective and differential for gram-negative lactose fermenters and non-lactose fermenters?

MacConkey agar
Mannitol salt agar
Coagulase test
Bile esculin hydrolysis

Question 231.4 PointsThe least numerous of all white blood cells that release histamine during inflammation and allergic reactions are

Monocytes.
Basophils.
Lymphocytes.
Eosinophils.
Neutrophils.

Question 241.4 PointsMedical Microbiology includes all but which of the following

Pathology
Immunology
Epidemiology
Phycology/algology
Bacteriology

Question 251.4 PointsThe specificity of an antibody is due to

The constant portions of the H and L chains.
The L chains.
The variable portions of the H and L chains.
Its valence.
The H chains.

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Assessment due date6/13/21, 11:59 PM (CDT)
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