University of Sargodha BS 4th Term Examination 2024 Paper: Biological Techniques (Z0OL-5105) Maximum Marks: 40
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Paper text
University of Sargodha
BS 4th Term Examination 2024
Paper: Biological Techniques (Z0OL-5105)
Maximum Marks: 40
Subject: Zoology
Time Allowed: 02:30 Hours
Note: Objective part is compulsory. Attempt any three questions from subjective part.
Q.1.
Objective Part
(Compulsory)
Write short answers of the following in 2-3 lines of each on your answer sheet.
i. Define phase contrast microscope.
ii. What is ocular micrometer?
111.
Define lyophilization.
IV.
What is fixative?
V.
What is microtom?
vi.
What is standard unit for volume?
vii,
Define DNA sequencing.
vill.
What is stock solution?
(2*8)
Subjective Part
(3*8)
Q.2. Write note on principle of working of scanning electron microscope.
Q.3.
Write note on use of stage and ocular micrometer, its calibration and measurement of cheek cell
and nuclei.
Q.4.
Q.5.
Q.6.
What do you know about electrophoresis principle and application?
Write in detail process of preparation of stained specimen for optical microscopy.
Write note on basic principles of sampling and preservation techniques.
-- LK-5577/12-01-24