The pupillary light reflex
In strong light the pupil contracts, while in low light it dilates.
Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.
Let’s simulate protein digestion in the stomach using a mixture of hydrochloric acid and pepsin.
Proteins are sensitive to environmental changes. In this video we demonstrate how easy it is to...
A combination of fungal hyphae and algal cells viewed under a light microscope at a hundred...
Examination of long, rectangular onion epidermal cells under the microscope at 100x magnification.
Purifying a solution coloured with fuchsine dye with finely ground activated carbon granules and...
When the patellar tendon is lightly tapped, the extensor muscle stretches slightly.
Don’t smoke! This video demonstrates what happens in the lungs when a person smokes.