Oxygen moves from the lungs to the blood a. by way of simple diffusion because the oxygen concentration in the blood is lower than than the lungs and diffuses down its concentration gradient.
b. by way of active transport requiring energy to overcome the repulsive forces of the cell membrane.
c. by way of facilitated diffusion through a protein channel in the cell membrane since oxygen would normally be repelled by the membrane.
d. by way of active transport to build up the oxygen concentration in the blood.

What are some characteristics of a free enterprise economy?

Ateam from new york presbyterian hospital is conducting a study about a recent increase in cases involving both excess sweating and kidney stones. what would the team need before it draws a conclusion about the cases? medications that are specifically designed to treat the sickness machines that are built to process blood and reduce symptoms until patients are healthy again data that profile the various patients who report these symptoms proof that the excess sweating is related to the excessive kidney stones

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an