The patellar reflex
When the patellar tendon is lightly tapped, the extensor muscle stretches slightly.
Purifying a solution coloured with fuchsine dye with finely ground activated carbon granules and...
Through mild physical exercise, even a trained body doubles the number of breaths it takes...
If bile contains no digestive enzymes, why does it play such an important role in digestion? How...
Examination of long, rectangular onion epidermal cells under the microscope at 100x magnification.
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.
Don’t smoke! This video demonstrates what happens in the lungs when a person smokes.
Red-green colour deficiency is a genetic condition.