Question 1

Which of the following statements regarding virus morphology is true:

Accepted Answer

A)  All RNA viruses are spherical in shape 
B)  Some viruses contain flagella 
C)  Some viruses with DNA genome contain nucleus 
D)  Viral surface proteins protect viral genome from nucleases 
E)  Helical nucleocapsid are found with single stranded DNA virus 
A)  All RNA viruses are spherical in shape 
B)  Some viruses contain flagella 
C)  Some viruses with DNA genome contain nucleus 
D)  Viral surface proteins protect viral genome from nucleases 
E)  Helical nucleocapsid are found with single stranded DNA virus

Question 2

It is true for bacteria that:

Accepted Answer

A)  Have true nucleus 
B)  Flagella are responsible for adhesion 
C)  Capsule is associated with virulence 
D)  Have no cell wall 
A)  Have true nucleus 
B)  Flagella are responsible for adhesion 
C)  Capsule is associated with virulence 
D)  Have no cell wall

Question 3

Prokaryotic cells has no:

Accepted Answer

A)  Ribosomes 
B)  Cell wall 
C)  Mesosomes 
D)  True nucleus 
A)  Ribosomes 
B)  Cell wall 
C)  Mesosomes 
D)  True nucleus

Question 4

Rarely cause disease in immune.competent people but can cause serious infections in immune.compromised patients:

Accepted Answer

A)  True pathogen 
B)  Commensal 
C)  Flora 
D)  Opportunistic pathogen 
A)  True pathogen 
B)  Commensal 
C)  Flora 
D)  Opportunistic pathogen

Question 5

Which of the following is true regarding flagellum:

Accepted Answer

A)  Short, rigid structure 
B)  L.PS in nature 
C)  Protein in nature 
D)  Helps in bacterial adherence to host cells 
A)  Short, rigid structure 
B)  L.PS in nature 
C)  Protein in nature 
D)  Helps in bacterial adherence to host cells

Question 6

Infectious dose of shigella is:

Accepted Answer

A)  10 
B)  100 
C)  100000 
D)  1000000 
A)  10 
B)  100 
C)  100000 
D)  1000000

Question 7

One fact is false about endotoxins

Accepted Answer

A)  Produced by gram .ve bacteria 
B)  Produce fever 
C)  Can be converted to toxoids 
D)  Of chromosomal origin 
E)  Polysaccharide in nature 
A)  Produced by gram .ve bacteria 
B)  Produce fever 
C)  Can be converted to toxoids 
D)  Of chromosomal origin 
E)  Polysaccharide in nature

Question 8

One fact is true about endotoxins

Accepted Answer

A)  Produced by gram .ve bacteria 
B)  Strong immunogenic 
C)  Heat labile 
D)  Specific in action 
E)  Protein in nature 
A)  Produced by gram .ve bacteria 
B)  Strong immunogenic 
C)  Heat labile 
D)  Specific in action 
E)  Protein in nature

Question 9

Which statement regarding fungi is correct :

Accepted Answer

A)  All fungi are able to grow as yeast and mold 
B)  Although fungi are eukaryotes they lack mit. ' dria 
C)  Fungi are photosynthetic 
D)  Fungi have nucleus and chromosomes 
E)  Few ungi possess cell membranes 
A)  All fungi are able to grow as yeast and mold 
B)  Although fungi are eukaryotes they lack mit. ' dria 
C)  Fungi are photosynthetic 
D)  Fungi have nucleus and chromosomes 
E)  Few ungi possess cell membranes

Question 10

Infection which is present at a low level in specific population

Accepted Answer

A)  Epidemic 
B)  Pandemic 
C)  Endemic 
A)  Epidemic 
B)  Pandemic 
C)  Endemic

Question 11

Sex pili formation is function of :

Accepted Answer

A)  Ribosome 
B)  Chromosome 
C)  F plasmid 
D)  Cell wall 
A)  Ribosome 
B)  Chromosome 
C)  F plasmid 
D)  Cell wall

Question 12

The only prokaryotic that have sterol in cell membrane is:

Accepted Answer

A)  Mycoplasma 
B)  Gram positive bacteria 
C)  Rickettsia 
D)  Chlamydia 
E)  Gram negative bacteria 
A)  Mycoplasma 
B)  Gram positive bacteria 
C)  Rickettsia 
D)  Chlamydia 
E)  Gram negative bacteria

Question 13

All of the following are correct as regard exotoxin except:

Accepted Answer

A)  It is protein 
B)  Heat stable 
C)  Secreted by both gram positive and gram negative 
D)  Can be changed into toxoid 
E)  Highly immunogenic 
A)  It is protein 
B)  Heat stable 
C)  Secreted by both gram positive and gram negative 
D)  Can be changed into toxoid 
E)  Highly immunogenic

Question 14

Viral replication:

Accepted Answer

A)  Occurs by binary fission 
B)  Requires host cell macromolecules 
C)  Can be prevented by antibiotics 
D)  Can occur in synthetic media 
A)  Occurs by binary fission 
B)  Requires host cell macromolecules 
C)  Can be prevented by antibiotics 
D)  Can occur in synthetic media

Question 15

One of the following statements is not true for viruses:

Accepted Answer

A)  Contain either DNA of RNA 
B)  Lack mitochondria 
C)  Contain protein coat 
D)  Multiply by binary fission 
A)  Contain either DNA of RNA 
B)  Lack mitochondria 
C)  Contain protein coat 
D)  Multiply by binary fission

Exam 1: Pathogenesis-Antibiotic-Structure