MCB2010 EXAM 2 Questions with Complete Solutions 100% Solved| Grade A+
Which of the following is a primary advantage of semisynthetic drugs? they have a broader
spectrum of action
a med which specifically targets cell walls that contain arabinogalactan-mycolic acid is:
isoniazid
Which type of antimicrobial agent has the narrowest spectrum of action? antivirals
The first synthetic antimicrobial widely available for treatment of infections was an
attachment antagonist
meds that should never be prescribed to pregnant women include: sulfonamides and
tetracyclines
A compound is extracted from a microbial culture and is modified in the lab for use as an oral
med. this product would be a semisynthetic antimicrobial
most drugs that inhibit the synthesis of the cell wall act by preventing cross linkage of NAM
subunits
Inhibitors of DNA synthesis specifically effective of prokaryotes are quinolones
The E-test determines what? both susceptibility and MIC (minimum inhibitory
concentration)
How does resistance to drugs spread in bacterial populations? Both horizontal gene transfer
and the growth of biofilms spread drug resistance
, what is the MOA of vancomycin? inhibits cell wall synthesis
what is the MOA of erythromycin? inhibits protein synthesis
Drug resistant populations of microbes arise When exposure to drugs selectively kills
sensitive cells, allowing overgrowth of resistant cells.
What enzyme do human tears have? What does it do? lysozyme; destroys peptidoglycan
layer
Which test to measure the effectiveness of disinfectants and antiseptics reveals the minimum
time required for the disinfectant to be effective? Kelsey-sykes capacity test
Subunits for prokaryotic ribosome: 50S and 30S
Subunits for eukaryotic ribosome: 60S and 40S
Which of the following microbial methods does not actually kill microbes or inhibit their growth
but instead removes them physically from samples? filtration
How does the addition of salt or sugar help preserve food? creates a hypertonic
environment
T/F: UV does not penetrate well true
The effectiveness of chemical disinfectants has historically been compared to that of which of
the following? phenol
Which of the following is a primary advantage of semisynthetic drugs? they have a broader
spectrum of action
a med which specifically targets cell walls that contain arabinogalactan-mycolic acid is:
isoniazid
Which type of antimicrobial agent has the narrowest spectrum of action? antivirals
The first synthetic antimicrobial widely available for treatment of infections was an
attachment antagonist
meds that should never be prescribed to pregnant women include: sulfonamides and
tetracyclines
A compound is extracted from a microbial culture and is modified in the lab for use as an oral
med. this product would be a semisynthetic antimicrobial
most drugs that inhibit the synthesis of the cell wall act by preventing cross linkage of NAM
subunits
Inhibitors of DNA synthesis specifically effective of prokaryotes are quinolones
The E-test determines what? both susceptibility and MIC (minimum inhibitory
concentration)
How does resistance to drugs spread in bacterial populations? Both horizontal gene transfer
and the growth of biofilms spread drug resistance
, what is the MOA of vancomycin? inhibits cell wall synthesis
what is the MOA of erythromycin? inhibits protein synthesis
Drug resistant populations of microbes arise When exposure to drugs selectively kills
sensitive cells, allowing overgrowth of resistant cells.
What enzyme do human tears have? What does it do? lysozyme; destroys peptidoglycan
layer
Which test to measure the effectiveness of disinfectants and antiseptics reveals the minimum
time required for the disinfectant to be effective? Kelsey-sykes capacity test
Subunits for prokaryotic ribosome: 50S and 30S
Subunits for eukaryotic ribosome: 60S and 40S
Which of the following microbial methods does not actually kill microbes or inhibit their growth
but instead removes them physically from samples? filtration
How does the addition of salt or sugar help preserve food? creates a hypertonic
environment
T/F: UV does not penetrate well true
The effectiveness of chemical disinfectants has historically been compared to that of which of
the following? phenol
