Dear Aspirants,
We hope you have started studying sincerely for the WBCS Preliminary Examination 2019. Since numerous questions appear from Biology, we have given below some of the most important biological facts:
The first ever cell that originated on Earth was a Prokaryotic cell.
The cornea is the only part of the body with no blood supply – it gets its oxygen directly from the air.
Embryos develop fingerprints three months after conception.
Between birth and death, the human body goes from having 300 bones, to just 206.
There are certain kinds of tumors that can grow their own teeth and hair – they’re called teratomas.
The small intestine is roughly 23 feet long.
The strongest muscle in the human body is the tongue.
A person uses 17 muscles when he smiles, and 43 when he frowns.
The eyes remain the same size after birth but the nose and ears never stop growing.
The hardest bone in the human body is the jawbone.
Tears and mucus contain an enzyme called lysozyme which breaks down the cell wall of many kinds of bacteria.
Lips are reddish due to a large number of capillaries hidden under the skin.
A drop of blood contains around 250,000 platelets.
The skin, or integumentary system, is the body’s largest organ. It protects us from the outside world, and is our first defense against bacteria, viruses and other pathogens. Our skin also helps regulate body temperature and eliminate waste through perspiration. In addition to skin, the integumentary system includes hair and nails.
Hope you enjoyed reading and wouldn’t forget the learnt things.
Best of Luck!
Avision
Howrah, Liluah & Kolkata
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