Forwarded from MCQ 6แตสฐ stage (zahraa โจ)
ูููุงุฆุฏู :
Our body has three lines of defence....
The first line of defence is Physical and Physiological barriers.
_______
The second line of defence includes Cellular and Cytokine barriers.
_______
The third line of defence includes humoral and cell- mediated immunity.
Our body has three lines of defence....
The first line of defence is Physical and Physiological barriers.
_______
The second line of defence includes Cellular and Cytokine barriers.
_______
The third line of defence includes humoral and cell- mediated immunity.
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
ู
ุญุงุถุฑุฉ ุฏูุชูุฑ ุณุนุฏ ุงูุซุงููุฉ
Antimicrobial chemotherapy
Antimicrobial chemotherapy
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
The development of antimicrobial chemotherapy began in 1935 with the discovery of the sulfonamide
Anonymous Quiz
65%
T
35%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
these have a rapid lethal action, e.g. penicillins,cephalosporins & aminoglycosides
Anonymous Quiz
9%
Bacteriostatic drugs
91%
bactericidal drugs
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
penicillins & cephalosporins interfere with cell wall synthesis and cause bacteriolysis
Anonymous Quiz
94%
T
6%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
cause disruption of the cytoplasmic membrane and leakage of cellular proteins & nucleotides leading to cell death
Anonymous Quiz
18%
tetracyclines
5%
gentamycin
4%
tobramycin
74%
polymyxins
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
Many chemotherapeutic block protein synthesis by acting on the 70s or 80s subunit of bacterial ribosomes
Anonymous Quiz
27%
T
73%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
quinolones
Anonymous Quiz
12%
inhibits RNA synthesis
69%
inhibit DNA synthesis
19%
inhibit DNA and RNA synthesis
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
Regarding to resistance to aminoglycosides
Anonymous Quiz
10%
The organism produced enzymes that destroy the drug
27%
The organism change its permeability to the drug by modification of protein in the cell membranes
51%
The organism develops an altered receptor site for the drug
12%
The organism develop an altered metabolic pathway that by passes the reaction inhibited by the drug
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
M. Tuberculosis, which survive for years in the tissues & their resistance is due to metabolic inactivity
Anonymous Quiz
90%
T
10%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
One of the following is false about Plasmid
Anonymous Quiz
63%
is an intra-chromosomal genetic elements associated with bacterial resistance to antibiotics
8%
plasmids carry many genes that code for the production of enzymes that destroy the antibiotics
5%
plasmids may result in epidemic resistance among bacteria by moving from one to the other
7%
ร- lactamases destroys the ร- lactam ring in penicillin & cephalosporin
17%
All are true
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
streptomycin resistance can result from a mutation in the chromosomal gene that controls the receptor for streptomycin located in the 50s bacterial ribosome
Anonymous Quiz
40%
T
60%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
In hospitals its common finding that about 90 % of Staphylococcus aureus strains are resistant to penicillin
Anonymous Quiz
90%
T
10%
F
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
effect on the 8th cranial nerve leading to deafness
Anonymous Quiz
13%
tetracyclines
64%
streptomycin
23%
aminoglycosides
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ
The use of benzathine penicillin G injections every 3-4 weeks to prevent reinfection with
Anonymous Quiz
5%
cholera
85%
Streptococcus pyogenes in rheumatic patients
4%
neonatal sepsis
5%
gonorrhea
Forwarded from ู
ุตุทูู ูุชูุงู ุงูู
ุงููุฏ