TA Session -1 (Cullen) Flashcards
Bacteria have with of the following ribosomes?
A. 60s
B. 70s
C. 80s
D. 90s
B. 70s
Note: 80s = eukaryotic cells
Bacteria contain a nucleus
True or False?
False
Which of the following do bacteria have
A. Sterols
B. Nucleus
C. Histones
D. Complex cell wall
D. Complex cell wall
Note: They don’t have the other answer choices
Which type of bacteria is known for having a thick layer of peptidoglycan and teichoic acid?
A. Gram +
B. Gram -
C. Mycobacteria
A. Gram +
Note: teichoic acid (specific to gram +)
Which of the following is known for having thin peptidoglycan and LPS?
A. Gram +
B. Gram -
C. Mycobacteria
B. Gram -
Which of the following is known to have mycolic acid ?
A. Gram +
B. Gram -
C. Mycobacteria
C. Mycobacteria
Which of the following is an endotoxin?
A. Specific O chain in Gram - species
B. Lipid A portion of Gram - species
C. A toxin produced inside Gram + species by normal metabolic actively
D. Lipid A portion of Gram + species
B. Lipid A portion of Gram - species
Note: Exotoxins are: A toxin produced inside Gram + species by normal metabolic actively
The death phase (of bacteria) can lead to the death of the patient (gram -)
True or False ?
True
Note: not very likely
What tests for endotoxin?
A. CBC
B. Blood Biochemistry
C. PT/PTT
D. Limbus amebocyte lysate test
D. Limbus amebocyte lysate test
Note: horse-shoe crab slide
Which of the following cannot utilize oxygen for growth
A. Aerobic
B. Faculatative anaerobe
C. Capnophilic
D. Aerotlerant anaerobe
D. Aerotlerant anaerobe
Note: Can grow in the presence of oxygen but it will not utilize oxygen for growth
Virulence is the ability of a pathogen to produce a disease by overcoming the defense mechanism of the host ?
True or False
False
Note: Pathogenicity would be correct here
Endotoxins are metabolic products of gram + species and exotoxins are the lipid A portion of outer membrane of gram - species
True or False
False
Note: Reverse Endotoxins & exotoxins for correct statement
Which of the following is not a method of transferring virulence factors from one bacteria to another?
A. Mutation
B. Transduction
C. Conjucation
D. Transformation
A. Mutation
After culture and sensitivity the best antimicrobial to use will be under which break point
A. Lethal
B. Resistant
C. Intermediate
D. Susceptible
D. Susceptible
Note: Lethal is not a break point (there is only 3)
Which of the following is not a reason to culture and sensitivity testing?
A. Save time
B. Prevent disease relapse
C. Better treat your patients
D. Prevent antimicrobial resistance
A. Save time