Not all spider bites are bad, in fact, most are not, but there are a few spiders that when they bite, they do incredible damage like the brown recluse below!pider Identification. Spiders can be found living in almost every habitat on earth. The only place that spiders are not found is only the harshest environments on Earth, the North and South poles, the highest mountains and the ocean. Some spiders have been found near the ocean, living in coral near the ocean edge.
A milliliter of blood contains about 5 billion red blood cells, each of which is packed with about 300 million hemoglobin molecules! A milliliter of blood contains about 5 billion red blood cells, each of which is packed with about 300 million hemoglobin molecules!
The O 2 carrying molecule in blood is hemoglobin (Hb). RBC's are essentially bags of heme dedicated to carrying O 2. Hemoglobin is an RBC protein which can reversibly bind O 2. About 25% by volume and 33% by weight of an RBC is made up of hemoglobin (Hb).Hemoglobin is the protein which imparts the red color to blood.emoglobin (Hb) in g/100 mL of blood (% w/v) 14-20 g of hemoglobin/100 mL of blood in infants 13-18 g of hemoglobin/100 mL of blood in adult males 12-16 g of hemoglobin/100 mL of blood in adult females Hemoglobin structure. RBC's pick up O 2 at the lungs and distribute that O 2 to all cells of the body.