What are lichens made of?

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

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Preparing a tissue sample from an onion

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

Modelling protein digestion in the stomach

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

The change in respiratory rate during exercise

Through mild physical exercise, even a trained body doubles the number of breaths it takes...

Making a tissue sample

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

Protein denaturation

Proteins are sensitive to environmental changes. In this video we demonstrate how easy it is to...

The patellar reflex

When the patellar ligament is lightly tapped, the extensor muscle stretches slightly.

Studying the blind spot

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

The pupillary light reflex

In strong light the pupil contracts, while in low light it dilates.

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