VET TECH IMMUNOLOGY STUDY GUIDE
TEST PAPER QUESTIONS WITH THOROUGH
ANSWER EXPLANATIONS
●● Staphylococcus are bacteria with the following morphology
Answer: Cocci arranged in clusters
●● Gram negative bacteria often produce ----, while gram positive often
produce------
Answer: Endotoxins and exotoxins
●● How do viruses cause disease?
Answer: Host cell destruction
●● How are viruses viewed?
Answer: Electron microscpe
●● Discs on sensitivity plates contain?
Answer: Antibiotics
●● A gram + organism will stain what color?
Answer: Purple
,●● A gram - organism will stain what color?
Answer: Red
●● Which organism may be difficult to culture using a standard bacterial
collection and transport media?
Answer: Anaerobic bacteria, rickettsia, and fungi
●● How should bacterial plates be incubated?
Answer: Upside down
●● What temperature should bacterial plated be incubated at?
Answer: 37c
●● The test that is used to determine the concentration of an antibiotic
required to treat a patient is called?
Answer: MIC
●● Used to measure antimicrobial (antibiotic) susceptibility &
sensitivity
Answer: Mueller-Hinton agar
●● Favors growth of shigella and salmonella
, Answer: Hektoen (ss) agar
●● Most common agar, inexpensive, most bacteria will grow on it
Answer: Blood agar
●● Second most common agar, will tell if bacteria are lactose fermenters
Answer: MacConkey's agar
●● Spore formation is an identifying characteristic of?
Answer: Bacteria
●● What do we call the clear area around a sensitivity disc that contains
antibiotics?
Answer: Zone if inhibition
●● On a bacterial culture and sensitivity test, the most effective
antibiotic is the one that
Answer: Has the largest zone of inhibition
●● What is the purpose of the quadrant streak method of inoculating
incubation plates?
Answer: Separation of bacteria into distinct colonies
TEST PAPER QUESTIONS WITH THOROUGH
ANSWER EXPLANATIONS
●● Staphylococcus are bacteria with the following morphology
Answer: Cocci arranged in clusters
●● Gram negative bacteria often produce ----, while gram positive often
produce------
Answer: Endotoxins and exotoxins
●● How do viruses cause disease?
Answer: Host cell destruction
●● How are viruses viewed?
Answer: Electron microscpe
●● Discs on sensitivity plates contain?
Answer: Antibiotics
●● A gram + organism will stain what color?
Answer: Purple
,●● A gram - organism will stain what color?
Answer: Red
●● Which organism may be difficult to culture using a standard bacterial
collection and transport media?
Answer: Anaerobic bacteria, rickettsia, and fungi
●● How should bacterial plates be incubated?
Answer: Upside down
●● What temperature should bacterial plated be incubated at?
Answer: 37c
●● The test that is used to determine the concentration of an antibiotic
required to treat a patient is called?
Answer: MIC
●● Used to measure antimicrobial (antibiotic) susceptibility &
sensitivity
Answer: Mueller-Hinton agar
●● Favors growth of shigella and salmonella
, Answer: Hektoen (ss) agar
●● Most common agar, inexpensive, most bacteria will grow on it
Answer: Blood agar
●● Second most common agar, will tell if bacteria are lactose fermenters
Answer: MacConkey's agar
●● Spore formation is an identifying characteristic of?
Answer: Bacteria
●● What do we call the clear area around a sensitivity disc that contains
antibiotics?
Answer: Zone if inhibition
●● On a bacterial culture and sensitivity test, the most effective
antibiotic is the one that
Answer: Has the largest zone of inhibition
●● What is the purpose of the quadrant streak method of inoculating
incubation plates?
Answer: Separation of bacteria into distinct colonies
