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!
Someone else already gave the normal lab values for hemoglobin in g/dL, which is how hemoglobin amounts are typically measured. But in the spirit of the asked question, I calculated the percentages for you. Hemoglobin makes up around 33% of the total red blood cell (RBC), if you include the water content of the cells. If you're a woman, RBCs should be 37-48% of your total blood volume. For guys, it should be 45-52%. We call this value the hematocrit.