The answer to this question would be: <span>enzymes that clot blood
Enzyme is a protein that needs to keep its 3D structure to works. If the pH of the blood is changed, the protein structure of the enzyme can be changed. </span><span>DNA doesn't control starch digestion in the blood. Chlorophyll doesn't carry oxygen, hemoglobin is. Red<span> blood cells also don't make antibodies</span></span>
