Mosit heat kills microorganisms by __ their proteins Answer: square

kills microorganisms by denaturing their proteins.<br /><br />Denaturation refers to the process where the structure of a protein is altered, causing it to lose its functional shape. This can be caused by various factors, including heat. When microorganisms are exposed to high temperatures, such as those found in moist heat sterilization methods, the heat energy disrupts the hydrogen bonds and other interactions that hold the protein in its specific three-dimensional structure. As a result, the protein unfolds and loses its functional properties, leading to the death of the microorganism.<br /><br />Therefore, the correct answer is: denaturing.