Changes in the gene pool are closely related to genetic mutations, which are a major part of evolution.
Integral proteins span the membrane and peripheral proteins reside on one side or the other.
The alveoli are lined with mucus and are surrounded by a network of blood capillaries. They have very thin walls for gases to be absorbed through. An individual air sac is called an alveolus. The layer of moisture in the alveoli allows gases to dissolve so that they can diffuse quickly.
I hope that helps you!
The answer to this question would be Glucose.
