Answer: Hemoglobin
Explanation: Hemoglobin is a protein very rich in iron found in red blood cells and is responsible for the transportation of Oxygen from the lungs to the whole body. Oxygen binds to the hemoglobin in red blood cells and the red pigmentation of blood that is highly oxygenated is due to the hemoglobin content found in RBC's.
The three primary mechanisms by which molecules move across the cell membrane are :
- Passive transport, the movement of molecules that does not require energy
- Diffusion, when molecule move from higher concentration to lower concentration
- Osmosis, when molecule move to higher concentration
hope this helps
The answer is a Volcanic Island Arc
Answer:
merchant
Explanation:
Before Muhammad had the first revelation, he was a merchant. He was well thought and trained for this profession throughout his life, and he was a very good and successful merchant. The majority of his career in this profession was including trade between the Indian Ocean and the Mediterranean, which was one of the best trading spots in that period of time. During his merchant career, Muhammad met many people, including lot of Christians, which heavily influenced his life, and later led to the revelations and development of the Islam.
Sounds a lot like a lab...
