1. Vitamin B12:
a. absorption affected in achlorhydria
b. absorption requires intrinsic
factor synthesized by body of stomach
c. deficiency occurs if the parietal
cells are lost
d. deficiency causes hypersegmentation
of the neutrophil nucleus
e. increased mean cell volume of
the erythrocytes occurs in deficiency
2. The following antibiotics inhibit
cell wall synthesis:
a. vancomycin
b. gentamicin
c. polymyxin
d. sulphonamides
e. cephalosporin
3. Lid tumours with malignant
potential include:
a. neurofibroma
b. basal cell papilloma
c. senile keratosis
d. keratoacanthoma
e. solar keratosis
4. Corneal dystrophy containing
amyloid include:
a. Avellino dystrophy
b. lattice dystrophy
c. granular dystrophy
d. macular dystrophy
e. Schyneder dystrophy
5. Saccadic eye movements:
a. may be vertical
b. may be torsional
c. may occur during sleep
d. the velocity may be voluntarily
controlled
e. maximum velocity is 2000
per second
6. The following structures are
situated in the dorsal midbrain:
a. nucleus of Cajal
b. nucleus of the posterior commissure
c. rostral interstitial nucleus
of the medial longitudinal bundle
d. third cranial nerve nucleus
e. Edinger-Westphal nucleus
7. The following are are mesodermal
in origin:
a. the dilator muscle of the iris
b. the iris stroma
c. the ciliary muscle
d. the ciliary epithelium
e. levator palpebrae superioris
8. Extraocular muscles:
a. have a sensory nerve supply
b. have microscopic appearance similar
to striated muscles
c. lateral rectus is supplied in
part by the lacrimal artery
d. inferior rectus is supplied in
part by the infra-orbital artery
e. the lateral rectus has the smallest
muscle mass
9. The following are true about
enzymes:
a. cyclooxygenase converts leucotriene
into arachidonic acid
b. aldose reductase converts glucose
to sorbitol
c. aldose reductase converts galactose
to dulcitol
d. tyrosinase converts DOPA to dopqauinone
e. galatose kinase converts galactose-1-phosphate
to glucose-1-phosphate
10. Corynebacterium:
a. is Gram positive coccus
b. are a constituent of the normal
commensal population in the conjunctival sac
c. causes membranous conjunctivitis
d. is a recognized cause of phlyctenular
conjunctivitis
e. is widely resistant to antibiotics
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