The cell is the smallest functioning structure of all living organisms. It is also known as ‘the building block of life’. The average human body has an estimated 100 trillion cells and a typical cell size is about 10 micrometer. Below are a list of 8 common cells found in organisms. That is how cells look like under a light microscope.
The Red Blood Cell
It’s job is to carry oxygen to other cells all over the body.
The White Blood Cell
provides protection from foreign cells and infections. A lot more can be seen near sites of infections.
It is a type of protozoa, moves a lot and is highly active.
Sea urchin egg and sperm
The above is a picture of countless sperms trying to penetrate an already fertilized egg. You can see a barrier layer of membrane formed clearly at the lower right are of the circle.
Little soldiers of the male species.
A blood clot is the cause of decreased blood flow through a vessel.
Eating up foreigners
Notice the fluorescent glow in the white cells. Those are engulfed particles in the tummy of white blood cells.
The one above is called a Diatom. Planktons play an important role in producing, consuming and recycling organic material in freshwater and marine communities.