Forwarded from MCQ 6ᵗʰ stage (zahraa ✨)
للفائده :
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 مصطفى فتيان الماهود
محاضرة دكتور سعد الثانية
Antimicrobial chemotherapy
Antimicrobial chemotherapy
Forwarded from مصطفى فتيان الماهود
The development of antimicrobial chemotherapy began in 1935 with the discovery of the sulfonamide
Anonymous Quiz
65%
T
35%
F
Forwarded from مصطفى فتيان الماهود
these have a rapid lethal action, e.g. penicillins,cephalosporins & aminoglycosides
Anonymous Quiz
9%
Bacteriostatic drugs
91%
bactericidal drugs
Forwarded from مصطفى فتيان الماهود
Forwarded from مصطفى فتيان الماهود
Forwarded from مصطفى فتيان الماهود
penicillins & cephalosporins interfere with cell wall synthesis and cause bacteriolysis
Anonymous Quiz
94%
T
6%
F
Forwarded from مصطفى فتيان الماهود
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 مصطفى فتيان الماهود
Many chemotherapeutic block protein synthesis by acting on the 70s or 80s subunit of bacterial ribosomes
Anonymous Quiz
27%
T
73%
F
Forwarded from مصطفى فتيان الماهود
quinolones
Anonymous Quiz
12%
inhibits RNA synthesis
69%
inhibit DNA synthesis
19%
inhibit DNA and RNA synthesis
Forwarded from مصطفى فتيان الماهود
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 مصطفى فتيان الماهود
M. Tuberculosis, which survive for years in the tissues & their resistance is due to metabolic inactivity
Anonymous Quiz
90%
T
10%
F
Forwarded from مصطفى فتيان الماهود
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%
ß- lactamases destroys the ß- lactam ring in penicillin & cephalosporin
17%
All are true