Test 95   (microbiology)

1. The following intrauterine infection are known to cause ocular
    anomalies:

a. cytomegalovirus

b. chickenpox 

c. hepatitis A

d. Epstein-Barr's virus

e. Listeria 

Answera.T   b.T  c.F  d.F  e.T
Other intrauterine infection that cause ocular anomalies include:
rubella
syphilis
toxoplasmosis.
Hepatitis A does not have fetal ocular development.

2. The following are used to detect antibodies:

a. polymerase chain reaction

b. complement fixation

c. haemaglutination inhibition

d. coagulase test

e. indirect immunofluorescence

Answera.F   b.T   c.T  d.F  e.T
Polymerase chain reaction is used to detect a specific DNA.
Coagulase test is used to detect Staphylococcal aureus which secret coagulase.

3. The following are aminoglycoside antibodies:

a. vancomycin.

b. amikacin

c. neomycin

d. streptomycin

e. clindamycin

Answera.F   b.T  c.T  d.T  e.F
While aminoglycoside antibiotics usually end 
with the post-fix -cin. Clindamycin and vancomycin
are exceptions. Clindamycin belongs to the macrolide group and vancomycin acts on the cell wall.

4. Neuroretinitis occurs with the following infection:

a. cat-scratch fever

b. Lyme disease

c. toxoplasmosis

d. cosackie virus

e. syphilis

Answera.T  b.T  c.T  d.T  e.T
Neuroretinitis can occur with many infections. Other causes include:
herpes simplex
infectious mononucleosis
parvovirus
toxocariasis
hepatitis B

5. Bacteria spores:

a. are resistant to antibiotics

b. allow the bacteria to multiple in adverse condition

c. are usually formed by Gram-negative bacteria

d. can be identified with Gram stains.

e. are killed by temperature of 120⁰ for 20 minutes.

Answera.T   b.F  c.F  d.F  e.T
Spores are usually formed by Gram negative bacteria.
They are dormant and therefore cannot multiply.
Spores are not stained by Gram's method.

 
 

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