Skip to main content

Posts

Plasma membrane

 Plasma membrane or cell membranes One of the component of a cell is plasma membrane, it acts like a shield. At the boundary of every cell, the plasma membrane functions as a selective barrier that allows passage of enough oxygen, nutrients and wastes to service the entire cell. In other words a cell membrane is a covering or boundary which bounds the cell and cytoplasm hence, called plasma membrane or cell membrane. Cellular membranes contain four components: (1) a phospholipid bilayer, (2) transmembrane proteins, (3) an internal protein network providing structural support, and (4) cell-surface markers composed of glycoproteins and glycolipids. The fluid mosaic model of membrane structure includes both the fluid nature of the membrane and the mosaic composition of proteins floating in the phospholipid bilayer It maintains cell structure, shape just like fencing around a garden or farm. In plant cell cell wall is another covering upon cell membrane made up of cellulose that'...

Facts related to biology

Mesmerizing facts related biology These facts are not just" facts " they really make a base of any concept. There are a lot of jaw dropping facts in biology. Let me share some interesting ones with you guys.  Have you ever felt that why does your tongue feels a bit relaxing when it touches your mouth's hard palate(which is upper surface of your oral cavity) rather than touching lower surface of mouth because our tongue rests on hard palate at 1/2 inch behind front teeth and its important so that it will expand the palate and prevent crowding of teeth during early childhood. The next one click on this video and say hi to the this whooping vampire Amoeba, it will make you crazy about biology  Here, phagocytosis is happening through  pseudopodia and forming food vacuole and yes the food is spirogyra we can see those filamentous chloroplast present in it. These caddisfly use these pebbles to protect themselves from predators. These are usually found in rivers, lake, ponds as ...