BioBit – Red blood cells are specially designed to carry oxygen

Red blood cells (RBC), or erythrocytes, are the most common type of cell in your blood. Their main job is to transport oxygen to your tissues. This oxygen is transported using a protein called haemoglobin. Haemoglobin is what gives blood its red colour. Without haemoglobin, blood with be a light straw colour. Contrary to what…

BioBit – Cell Membrane, more than just the cells casing.

The cell membrane is the packaging that keeps the outside of the cell outside and the inside of the cell inside. It is composed of a special lipid, called phospholipids that arrange themselves into a bilayer. Phospholipids can be saturated or unsaturated and the amount of each within the membrane keeps the it the right consistency for…

BioBit – Lysosomes, your cells disposal system

Lysosomes (or vesicles) are membrane enclosed bubbles within the cell that contain enzymes and proteins that are found in almost every cell. They are formed when bubbles carrying enzymes break off from the Golgi body and fuse with other bubbles full of acid that activate the enzymes. They are important in: Waste disposal – Lysosomes can…

BioBit – Golgi body: Signed sealed and delivered

The Golgi body (or apparatus) is the final stop for most of the proteins made within the cell before they head off to perform their intended function. The Golgi body looks like a series of flattened discs or pancakes. New proteins are transported to the Golgi from the endoplasmic reticulum where they begin their journey through…

BioBit – Cells, the Lego blocks of life.

Cells are the basic unit of life. Every living thing on the planet is composed of cells. Humans, trees and fish have trillions of cells, while bacteria and yeast are single celled organisms. But what is a cell? Cells can be split into two categories, prokaryotic and eukaryotic, based on some key characteristics. Prokaryotic cells…