Microbiology Quiz
Preview:
Which test is used to detect the presence of cytochrome c oxidase in bacteria?
A. Catalase test
B. Oxidase test
C. Urease test
D. Coagulase test
The number of persons afflicted with an infectious disease is the _____ rate.
A. Morbidity
B. Pandemic
C. Incidence
D. Endemic
What are the purines found in DNA nucleotides?
A. Cytosine and Thymine
B. Adenine and Guanine
C. Adenine and Cytosine
D. Guanine and Thymine
A disease that has a steady frequency over time in a particular geographic location is referred to as ______.
A. Pandemic
B. Epidemic
C. Endemic
D. Sporadic
All of the following represent potential therapy for patients with SCID except
A. graft versus host.
B. transfusion with adensosine deaminase.
C. bone marrow transplants.
D. stem cell grafts.
Which type of bacteria can multiply only in the presence of oxygen?
A. Anaerobes
B. Aerobes
C. Salmonella
D. Facultative anaerobes
You do not really want to get your 3 children vaccinated. Your view is why do it when others around you will get the vaccine and end up protecting you and your children. Which is an accurate statement that your physician may provide to you in response to your challenge to vaccination?
A. This is not a smart choice. If enough people choose not to get vaccinated, the susceptible population grows to a large size, breaking the protective effect of herd immunity
B. Your choice is fine; your children will never become infected since this is actually the basis of herd immunity.
C. This is not a smart choice. You could face potential arrest for not vaccinating your child per the regulations of the U.S. government.
D. Your choice is fine; maybe you will change your mind when your child goes to college.
Why could viruses be considered to be nonliving organisms?
A. They do not have genetic information.
B. They are not able to move on their own.
C. They do not interact with their environment.
D. They are not able to reproduce without a host cell.
DiGeorge syndrome is the result of
A. delayed hypersensitivity.
B. congenital absence or immaturity of the thymus gland.
C. a genetic defect in the development of both T cells and B cells.
D. failure of B-cell development and maturity.
T/F: Interferons do not protect the cell that secretes them.
A. TRUE
B. FALSE
The chemical found in tears and saliva that hydrolyzes the peptidoglycan in certain bacterial cell walls is ______.
A. bile
B. lysozyme
C. lactic acid
D. hydrochloric acid
If an individual has a genetic disorder whereby they lack the ability to make complement protein C3, the likely consequence is
A. a higher incidence of bacterial and viral infections.
B. enhanced inflammation.
C. an inability to synthesize antibodies.
D. excessive fever development.
Antigen presenting cells
A. include dendritic cells.
B. include macrophages.
C. engulf and modify antigen to be more immunogenic.
D. hold and present processed antigen on their cell membrane surface.
E. All of the choices are correct.
Neutrophils, eosinophils, and basophils are called _____ because they have prominent cytoplasmic inclusions that appear with identifying, characteristic colors in a stained blood smear.
A. granulocytes
B. leukocytes
C. monocytes
D. agranulocytes
Autoimmunity is typically due to
A. a transfusion reaction.
B. a deficiency in T-cell development.
C. autoantibodies and T cells.
D. IgE and mast cells.