Worksheets1-14
Total questions: 14
Worksheet time: 7mins
Cell component of innate immunity defense is:
Macrophages
B-cells
T-cells
Normal antibodies
Erythrocytes
The cell wall of Gram positive bacteria is composed of:
Thin peptidoglycan layer
Thick peptidoglycan layer
Nucleic acids
Outer membrane with lipopolysaccharide
Periplasmic space
The cell wall of Gram negative bacteria contains:
Inorganic components
Thin peptidoglycan layer
Teichoic & lipoteichoic acids
Thick peptidoglycan layer
Nucleic acids
Agglutination reaction in tubes
Is interaction between specific antibody and soluble antigen resulting in formation of clumps
Is interaction between specific antibody and particulate antigen resulting in formation of sediment
Is interaction between specific antibody and cytokine resulting in formation of clumps
Positive result - formation of insoluble ring precipitate
Negative result - hemolysis
Slide agglutination reaction
Is a reaction of specific antibody with a soluble antigen resulting in formation of precipitate
Is a reaction of specific antibody with a particulate antigen resulting in formation of clumps
Negative result - formation of clumps
Positive result - change of color
Positive result - hemolysis
Transformation as the mechanism for gene transfer
Accomplishes several types of transfer for genes from donor cell into recipient cell
Is mediated by the temperate bacteriophages
Involves uptake of fragments of free DNA by competent cells
Depends on the presence of a conjugative plasmid in the donor cell
Requires viable donor cells
Active immunity refers
To the protection based on the production of specific antibodies by the host after immunization or infectious disease
To the protection based on activity of NK-cells
To the protection based on the transfer of preformed cytokines
Provides short-term protection
To protection based on the transfer of preformed specific antibodies
Obligate aerobes are bacteria
Which can produce energy from glucose by fermentation
In which the final acceptor is organic substance
Which require the presence of molecular oxygen for growth
In which the final electron acceptor is nitrogen
Which can proliferate regardless of presence of oxygen
Humoral components of innate (nonspecific) immunity defense is:
Complement system proteins
Insulin
Macrophages
Bacteriophages
Endotoxin
Passive immunity refers
To the protection based on the transfer of preformed specific antibodies
To the protection based on the transfer of preformed cell-mediated immunity
To the protection based on the transfer of preformed cytokines
Provides local immunity
Provides long-term protection
Probiotics are biopreparations for the correction of microflora which consist of:
Live indigenous microorganisms
Complex of live indigenous microorganisms with non-metabolizable substrates
Toxoids
Non-metabolizable non-absorbable substrates that are useful for growth of indigenous microbial flora
Bacteriophages
Conjugation as the mechanism for gene transfer
Accomplishes different ways of transfer for genes from donor cell to recipient cell
Is mediated by temperate bacteriophages
Involves uptake of fragments of free DNA by competent cells
Depends on the presence of a conjugative plasmid
Requires inactivated donor cells
Pure culture of bacteria is represented by:
The cells of one and the same genus
The cells derived from different sources
The cells of one and the same species
Genetically different organisms
Cells of different species
Facultative anaerobes are bacteria
Which can produce energy only by fermentation
Which carry out only respiration
Which die in the presence of oxygen
In which the final electron acceptor is molecular oxygen
Which can proliferate regardless of presence of oxygen
