MRI vs. MRA. An MRA, or magnetic resonance angiogram, is a type of MRI scan that uses MRI's magnetic fields and radio waves to produce pictures of blood vessels inside the body, allowing doctors to locate problems that may cause reduced blood flow.
Best Answer: Ethyl alcohol, at the concentrations used in most antibacterial preparations, kills bacteria by disrupting membranes and by denaturing proteins. Ethylalcohol is miscible in water (that is, completely soluble). But ethyl alcohol can also dissolve in the membranes of cells.
How does isopropyl alcohol kill bacteria? Isopropyl alcohol kills bacteria because it penetrates the skin  cell membranes to denature the protein that is inside bacteria.  Isopropyl alcohol, also known as rubbing alâ¦cohol, also can kill  fungi and viruses. 1 person found this useful.