Sickness/ disease and/or old age
Answer:
I think the answer the cell membrane, the nucleus, the cytoplasm, not sure 100%
In my deffinition for other questions:
Trait: a genetically determined characteristic.
DNA you should add what is that stand for: Deoxyribonucleic acid
4 possibles protein bases include: adenine (A), cytosine (C), guanine (G), and thymine (T)
Hope this still help :3
Gas exchange of oxygen and carbon dioxide takes place in the alveoli<span>. Oxygen from the inhaled air diffuses through the walls of the </span>alveoli<span> and adjacent capillaries into the red blood cells. The oxygen is then carried by the blood to the body tissues.</span>