Biuret Test for Protein

Biuret Test for Protein

What does Biuret test for? Proteins are the complex compound formed by thousands of amino acids. Amino acids are amphoteric electrolytes having carboxyl and amino groups that act like acid and base. It has one positive charge and one negative … Read more

Henderson Hasselbalch Equation

Henderson-Hasselbalch-Equation

Henderson Hasselbalch Equation Definition The Henderson-Hasselbalch equation is the equation commonly used in chemistry and biology to determine the pH of a solution. This equation shows a relationship between the pH or pOH of the solution, the pKa or pKb, … Read more

Membrane Carbohydrate

Membrane Carbohydrate Structure

Cell membranes are selective barriers that separate individual cells and cellular compartments. Membranes are assemblies of carbohydrates, proteins, and lipids held together by binding forces. Carbohydrates are covalently linked to proteins (glycoproteins) or lipids (glycolipids) and also an important part of cell membranes, and function … Read more

Passive Transport

Passive Transport

Plasma membranes must allow certain substances to enter and leave a cell, and prevent some harmful materials from entering and some essential materials from leaving. In other words, plasma membranes are selectively permeable—they allow some substances to pass through, but not … Read more

Membrane Proteins

Membrane Proteins

Biological membranes consist of a continuous double layer of lipid molecules in which membrane proteins are embedded. Although the lipid bilayer provides the basic structure of biological membranes, the membrane proteins perform most of the membrane’s specific tasks and therefore … Read more

Membrane Lipids

Membrane Lipids

Biological membranes consist of a lipid bilayer to which proteins and carbohydrates may be associated or covalently linked. Membrane lipids are lipids involved in forming the structure of biological membranes – both the cell membrane and intracellular membranes – and … Read more