Neco 2024 Biology Question 1

Practice practical question 1 from the 2024 Neco Biology examination. This question covers Cell Structure .

Neco 2024 Biology Practical

Topic: Cell Structure

Question 1 NECO • 2024 • BIOLOGY • practical

You are given a prepared slide of an onion epidermal cell stained with iodine. Using a light microscope, you are to observe and record observations of the cell.

Question Parts

( a )

State the steps you would follow to focus the slide and obtain a clear image of the cell at 400× magnification.

( b )

Identify three cell organelles that can be observed in the slide and describe their appearance.

( c )

Measure the length of a typical epidermal cell using the ocular micrometer (scale 0.01 mm per division). If the cell spans 45 divisions, calculate its length in micrometres. Show your calculation.

( d )

List two possible sources of error in the measurement and suggest a way to minimise each.

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About This Question

This is Neco 2024 Biology Question 1. It is one of the practical questions from the 2024 Neco Biology examination.

The question covers Cell Structure .

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