IRSC MCB2010 Dr. Koch Final Exam
Questions All Solved Correct.
Gram stain - Answer ·Separates Bacteria into 2 large groups
·First test when identifying a bacteria
Acid-fast stain - Answer ·Waxy
·Has mycolic acid
What parts are magnifying of the compound microscope? - Answer ·Objective lens
·Oculars
Transmission and scanning electron microscopy - Answer ·High resolution
· Transmission= Internal
· Scanning= Surface
Taxonomic hierarchy of classifying organisms - Answer · Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species (Dear king Phillip came over for good soup)
Structure of the bacterial flagellum - Answer · Filament= Whiplike structure
· Hook= connects the filament to the basal body
· Basal body= anchors the flagella to the cell
Components of the cell wall of bacteria (Gram +, Gram -, and acid-fast +) - Answer
·Lipopolysaccharised (LPS) = Gram Negative
·Lipid A causes Endotoxic shock = Acid fast and has mycolic acid
Environmental conditions halophiles live in - Answer High salt concentration
Oxygen requirements for bacteria (the different classifications) - Answer Microaerophiles and
has Low Oxygen
, · Replicate independently
How antiseptics and disinfectants are evaluated - Answer ·Standard test for the U.S.
·Use dilution Test
Process of conjugation - Answer · Bacteria exchange DNA through Pillus
· F+ cells have F plasmid
Process of translation - Answer · tRNAS recognize the codons in the mRNA
· Ribosomes
What type of germicide has the biggest, most lasting damage? - Answer · Damages DNA
Mechanisms of action of antimicrobial agents - Answer · Inhibition of cell wall synthesis
· Osmotic pressure
Characteristics of transduction - Answer · Virus (Bacteriophage)
Natural disinfecting agents are called what? - Answer Antibiotics
What is thimerosal used for? - Answer · Preserve Vaccines
· Heavy Metal
What lysozyme is used for in food preparation - Answer · Enzyme that kills Bacteria
· We make it in our sweat and tears
· Used to make cheese and wine
Characteristics of Viroids - Answer · Only infect Plants
· Small Circular Pieces of RNA
Characteristics of mycoplasma bacteria - Answer · Pleomorphic (NO SHAPE)
Questions All Solved Correct.
Gram stain - Answer ·Separates Bacteria into 2 large groups
·First test when identifying a bacteria
Acid-fast stain - Answer ·Waxy
·Has mycolic acid
What parts are magnifying of the compound microscope? - Answer ·Objective lens
·Oculars
Transmission and scanning electron microscopy - Answer ·High resolution
· Transmission= Internal
· Scanning= Surface
Taxonomic hierarchy of classifying organisms - Answer · Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species (Dear king Phillip came over for good soup)
Structure of the bacterial flagellum - Answer · Filament= Whiplike structure
· Hook= connects the filament to the basal body
· Basal body= anchors the flagella to the cell
Components of the cell wall of bacteria (Gram +, Gram -, and acid-fast +) - Answer
·Lipopolysaccharised (LPS) = Gram Negative
·Lipid A causes Endotoxic shock = Acid fast and has mycolic acid
Environmental conditions halophiles live in - Answer High salt concentration
Oxygen requirements for bacteria (the different classifications) - Answer Microaerophiles and
has Low Oxygen
, · Replicate independently
How antiseptics and disinfectants are evaluated - Answer ·Standard test for the U.S.
·Use dilution Test
Process of conjugation - Answer · Bacteria exchange DNA through Pillus
· F+ cells have F plasmid
Process of translation - Answer · tRNAS recognize the codons in the mRNA
· Ribosomes
What type of germicide has the biggest, most lasting damage? - Answer · Damages DNA
Mechanisms of action of antimicrobial agents - Answer · Inhibition of cell wall synthesis
· Osmotic pressure
Characteristics of transduction - Answer · Virus (Bacteriophage)
Natural disinfecting agents are called what? - Answer Antibiotics
What is thimerosal used for? - Answer · Preserve Vaccines
· Heavy Metal
What lysozyme is used for in food preparation - Answer · Enzyme that kills Bacteria
· We make it in our sweat and tears
· Used to make cheese and wine
Characteristics of Viroids - Answer · Only infect Plants
· Small Circular Pieces of RNA
Characteristics of mycoplasma bacteria - Answer · Pleomorphic (NO SHAPE)
