Making a tissue sample

Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.

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Studying the blind spot

Demonstrating a method to determine where exactly the blind spot is in our visual field.

Preparing a tissue sample from an onion

Examination of long, rectangular onion epidermal cells under the microscope at 100x magnification.

Sound localization

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The effect of bile in fat dispersion

If bile contains no digestive enzymes, why does it play such an important role in digestion? How...

Modelling protein digestion in the stomach

Let’s simulate protein digestion in the stomach using a mixture of hydrochloric acid and pepsin.

Studying adsorption

Purifying a solution colored with fuchsine dye with finely ground activated carbon granules and...

Substances in tobacco smoke

Don’t smoke! This video demonstrates what happens in the lungs when a person smokes.

What are lichens made of?

A combination of fungal hyphae and algal cells viewed under a light microscope at a hundred...

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