Cell Membrane

• The cell membrane is composed of phospholipids, cholesterol, proteins, and carbohydrates.
• Phospholipids are amphiphilic molecules with hydrophobic tails and hydrophilic heads.
• Cholesterol helps maintain the fluidity of the membrane by preventing it from becoming too rigid or too fluid.
• Proteins play various roles such as transporting substances across the membrane, recognizing other cells, and providing structural support to the membrane.
• Proteins play various roles such as transporting substances across the membrane, acting as receptors for signaling molecules, and providing structural support to the membrane.
• Glycocalyx refers to the layer of sugars that covers the outside of some bacteria and fungi.
• The glycocylax consists of the carbohydrate chain and glycoprotein
• Polar - when molecules have a positive and negative end
• Non polar - when molecules don't have a positive and negative end