Answer: C
Explanation: When four oxygen molecules bind up , the hemoglobin forms a compound called oxyhemogoblin
A peptide bond functions in making proteins. So a protein is made up of amino acids, which are held together by peptide bonds. Multiple peptide bonds makes a polypeptide
<span>1. Breathing moves air in and out of the lungs.
2. Oxygen diffuses from alveoli in the lungs into capillaries.
3. Oxygen enters red blood cells, where it binds to the protein hemoglobin.
4. Oxygen diffuses from the blood to the body's tissues, and carbon dioxide diffuses from the tissues to the blood.
5. Carbon dioxide leaves the body when exhale.</span>
an adjective describing the species
