It is called a homogeneous mixture
Viruses<span> are not considered "alive" because they lack many of the properties that scientists associate with </span>living<span> organisms.</span>
Our diets are composed of protein, fat and carbohydrates. Digestive enzymes<span> break down protein, carbohydrates and fats into smaller and smaller components.</span>
Hello! The correct answer for the blank is: CA2+ from the sarcoplas mic reticulum binds to troponin.
I hope that helped you! c: