The Essentials of Biological Processes
Complex biological processes occur within the human body and other animals on a daily basis. These biological processes include how animals breathe, break down food, absorb nutrients, and dispose of toxins; how blood flows through the heart; how organisms deal with gases; and how the human kidney functions.
Different groups of animals eat different foods, but what do animals physically do with the food they consume? The different methods of breaking down food all make up [more…]
Nutrients that the body can use are absorbed into the cells lining the small intestine. The rest of the material that cannot be further digested or used passes onto the large intestine. [more…]
Blood clots form to help prevent leaking when you break the surface of the skin — for example, when you cut your finger chopping carrots or on a piece of broken glass. Your body goes through a certain [more…]
Elements and gases are part of every living organism on earth. Life on earth began with elements and gases. Plants and animals formed from cells using those materials when the earth was forming. You can [more…]