Ijmb Model Questions Vol1 2019 Biology Question 1

Practice practical question 1 from the 2019 Ijmb Model Questions Vol1 Biology examination. This question covers Cell Structure .

Ijmb Model Questions Vol1 2019 Biology Practical

Topic: Cell Structure

Question 1 IJMB_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • practical

You are provided with a permanent slide of a section of animal epithelial tissue that has been stained with haematoxylin and eosin (H&E). Using a light microscope set at a total magnification of 400×, answer the following questions.

Question Parts

( a )

Identify and name three distinct cellular structures that can be clearly observed in the field of view.

( b )

For each structure named in (a), briefly describe its main function in the cell.

( c )

List two precautions that should be observed when preparing a permanent H&E‑stained slide to avoid artefacts.

( d )

One common source of error that may lead to misidentification of the nucleus is uneven staining. Explain how this error arises and suggest a method to minimise it.

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About This Question

This is Ijmb Model Questions Vol1 2019 Biology Question 1. It is one of the practical questions from the 2019 Ijmb Model Questions Vol1 Biology examination.

The question covers Cell Structure .

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