UNIVERSITY OF BUEA

FACULTY OF SCIENCE

SECOND SEMESTER EXAMINATIONS

Department: Biochemistry and Microbiology Course instructors: Ngemenva & Njie

Month : July Course code & Number: MLT 202

Year : 2009 Course title: Human Pathology

Date: 01

st

Time allowed: three hours Credi value: 06

Taenia solium (iii)

(iv) Elongated with single flagellum

Entamoeba histolytica (v)

(vi) Elongated egg with projection or spike seen in feaces or urine

2. The intestinal nematodes Tricharis trichara produces eggs with a characteristic shape which can be seen in a wet

preparation using a microscope.

(a) Briefly describe how a wet preparation is made in the laboratory (2mks)

(b) sketch a diagram of the egg of Tricharis trichara (1mk)

3. Occasionally outbreaks ofdiseases occur such as the swine flu, Ebola, fever and the outbreak may be endemic,

4. Read the below, then copy only the letter in the brackets and write against the letter the answer corresponding to

it. NB The answers may require single words, phrases or brief sentences.

“Stresses on cells exceeds their effect first at the biochemical level and three outcome of biochemical lessons are:

(a), (b), (c). The point of which cells death occur cannot be determined, however two causes of cell deaths are: (d),

(e). different types of necrosis occur after cell death. In coagulative necrosis, the microscopic picture shows (f)

while in liquefactive necrosis, separation occurs due to (g) refer to as heterolysis. Classification that can be defined

as (h)”.

5. (a) what is meant by metastasis.

(b) give an example of the following :

(ii) transmitted by feacal-oral spread (vii) located intracellularly after invasion. (4mks)

(c) List (i) two viruses transmitted by arthropods

(ii) two viruses which cause meningitis. (2mks)