I share a fun fact on this blog everyday on many subjects - Cars, Art, Algebra, Geometry, Physics, Chemistry, Biology, Human Body, Animals, Plants, Earth, Astronomy, Countries and Politics, Money Matters, Engineering, Riddle, History - but not limited to this.
Your body is made of cells -- but how does a single cell know to become part of your nose, instead of your toes? The answer is in your body's instruction book: DNA. Joe Hanson compares DNA to detailed manual for building a person out of cells -- with 46 chapters (chromosomes) and hundreds of thousands of pages covering every part of you. In this video learn how a DNA stores all the information needed for a human body.
All living beings - bacteria, animals, humans, plants - are made of cells. Amoeba is a single cell bacteria; human and most of the living world is made up of many cells. A human body has around 200 different cells. Each body part - hair, skin, blood, bone, heart, liver, etceteras - is made up of a different type of cell. Each type of cell has certain physical properties and knows its function. How does a cell know its function - this information is stored inside the cell in the form of DNA(Deoxyribonucleic acid is a molecule). This information tells cell how to work. DNA looks like this,
How do animals and plans grow ? - by cell division. One cell divided into two, two into four, four into eight and so on. This how babies grow into adults, seeds grow into trees. Since amoeba is a single celled organism, division of that single cell means the parent amoeba dying and two young amoebae being born. Multiple cells form a tissue, group of tissues form a organ and all the organs together form an organism.
Watch this amazing video that shows the cells inside human body
