Electricity & Magnetism 201

Let’s start by trying to understand what is magnetic dipole first before we go any further. “Magnetic dipole, generally a tiny magnet of microscopic to subatomic dimensions, equivalent to a flow of electric charge around a loop. Electrons circulating around atomic nuclei, electrons spinning on their axes, and rotating positively charged atomic nuclei all are magnetic dipoles. The sum of these effects … Read more

Knowing More About Enzymes

Information is adapted from http://www.biologyguide.net/unit1/2_enzymes.htm Secondary 1/2 Level What are enzymes? All enzymes are globular proteins → spherical in shape (Fig 3) Control biochemical reactions in cells They have the suffix “-ase“ Intracellular enzymes are found inside the cell Extracellular enzymes act outside the cell (e.g. digestive enzymes) Enzymes are catalysts → speed up chemical reactions (Fig 1 & Fig 2) … Read more