Module Three Pre-assessment

Question 1

Penicillin is a class of antibiotics that work by inhibiting cell wall synthesis of bacteria.

Answer 1

True

Penicillin is a beta-lactam antibiotic that works to block the actions of transpeptidases that are involved in the cross-linking process of the peptidoglycan layer of the bacterial cell wall.

Question 2

The process of disinfection removes all forms of life including spores.

Answer 2

False

Disinfection is a chemical or physical process that reduces the number of pathogenic organisms (not necessarily killing all organisms). Sterilization is a physical or chemical process that eliminates all life forms, including spores.

Question 3

Being susceptible, in relation to antibiotic susceptibility testing means that the antibiotic will be an effective treatment for the intended pathogen that is causing infection.

Answer 3

True

In sensitivity (susceptibility testing), susceptible means that the antibiotic was able to inhibit growth to the desired degree using a MIC standard inoculum and would be appropriate for treatment for the pathogen that is causing infection.

Question 4

Gentamycin is an antibiotic within the class of aminoglycosides that hinder bacterial growth by inhibiting the production of folic acid.

Answer 4

False

Gentamycin is an antibiotic in the class of aminoglycoside. However, aminoglycosides work to stop bacterial growth by inhibiting protein synthesis. Aminoglycosides impede protein synthesis by binding to the bacterial ribosomal subunit (30s) which results in the mistranslation and production of erroneous proteins.

Question 5

A microbiology lab that is considered a level one biohazard has the potential to cause serious health threats to most healthy adults.

Answer 5

False

A level one biohazard lab works with organisms that generally do not cause disease in healthy adults