1)Mechanims by which antibiotics kill or inhibit microbial growth are: a) Inhibi

Question

1)Mechanims by which antibiotics kill or inhibit microbial growth are: a) Inhibition of cell wall synthesis b) Injury of cell membrane c) Inhibition of protein synthesis d) Inhibition of DNA or RNA synthesis e) All of the above

5)The development of drug resistance in a microorganism may be due to: a) Abilty of the organism to destroy the abtibiotic b)mutation that allows the organism to by-pass the sensitive step c)Sporulation d)All of the above e) Only A and B above

6)The synthesis of vitamins B and K by enteric bacteria provides an example: a) Commensalism b) Symbiosis c) Opportunism d) Infection e) synegestic effect

18)The sources of antiserum are: a) Chemical synthesis in the laboratory b) Blood from animal that has developed antibodies to a specific antigen c) Gamma globulin separatd from pooled human blood d) All of the above e) Only B and C above

44)The gonococcus is morphologically similar to: a) Treponemz pallidum b) Meningococcus c) Staphylococcus d) Streptococcus e) None of the above

49)The direct cause of the symptoms of tetanus is: a)Endotoxin b)Exotoxin c)Toxic effect of the cell d)Hemolysins e)none of the above

Explanation / Answer

1)
a) Inhibition of cell wall synthesis
antibodies of bacteria kill bacteria by inhibiting synthesis of cell wall

5)
e) Only A and B above
Sporulation is asexual reproduction while others option aid development of drug resistance in a microorganism


6)
b. Symbiosis
symbiosis are a special type of interaction between species.sometimes harmful , Sometimes beneficial, such relationships are essential to ecosystems and many organisms, & they give a balance that can only be attain by working together.

18)
d) All of the above
All are the methods of production of monoclonal and polyclonal antiboides

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