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!
Hemoglobin is a molecule comprised of four subunits. Each subunit contains an iron containing pigment (heme) and a protein (globulin). There are two types of subunits, alpha and beta. Each gram of hemoglobin can carry 1.34 ml of oxygen.The oxygen carrying ability of blood is directly proportional to its hemoglobin concentration.emoglobin also serves as an important pH buffer in the extracellular fluid. 1  Normal hemoglobin values are: 2  Adult: (males): 13.5 - 17 g/dl. ( 3 Females): 12 - 15 g/dl. 4  Pregnancy: 11 - 12 g/dl. 5  Newborn: 14-24 g/dl 77% of this value is fetal hemoglobin, which drops to approximately 23% of the total at 4 months of age.