2007-07-04 20:38:12 · 9 answers · asked by David A 1 in Science & Mathematics ➔ Biology
Actually, blood is a deep purple, it just appears red when it is rich with oxygen. Regardless of that, the reason blood is red is because the hemoglobin, which transfers the oxygen through the blood, gets a reddish tint when enriched with oxygen. All mammals and all birds need oxygen, and hemoglobin is in all of their bloods, so that is why we all have the same blood color.
2007-07-04 20:50:36 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The color of the skin, depends basically on the melanin of a persons skin which is determined genetically and by the place where they live (Sun...) these cells in the skin produce a pigment that determines your skin color...
The blood on the other hand contains many different materials and cells, each with a different function. One of them is the Hemoglobin which is the red pigment, or color of blood, and contains iron, combined with protein.
When blood passes through the lungs, oxygen piggybacks on the hemoglobin of the red cells. From there, the red cells carry the oxygen through the arteries and the capillaries to all other cells of the body. Carbon dioxide from the body cells returns to the lungs through the veins in the same manner, by attaching to the hemoglobin.
2007-07-04 20:46:57 · answer #2 · answered by Mandy187 3 · 2⤊ 0⤋
U said Why is blood same dark red color .I dont no why
But U have made a mistake ,Some animals have a green blood. some have white blood Not all of them have a red blood
2007-07-05 00:49:23 · answer #3 · answered by scrooge_cool 1 · 0⤊ 0⤋
the type of trait as epidermis shade is set via pigments in it and is an adaption to distinctive climates. Africans progressed in a tropical climate; Asians tailored to an arctic one; and Europeans progressed in and tailored to a temperate climate between the extremes to which the different 2 important races have been subjected. there is re-adaption interior races, e.g. learn a Swede with a Spaniard. the former is from a less warm region and is gentle in coloring, on the same time as the latter is from a hotter area and is darker. pink is the colour of human blood no count if it fairly is to function precise, and it is not any longer uncovered to climate as epidermis is.
2016-10-19 21:18:01 · answer #4 · answered by manjeet 4 · 0⤊ 0⤋
Actually some animals have blood of different colours, notably green
See here for a list of green-blooded animals >>> http://www.markoshea.tv/series2/series02-04.html
2007-07-04 22:40:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It's because of the hemoglobin and the iron in the blood.
2007-07-04 21:01:55 · answer #6 · answered by Anonymous · 1⤊ 0⤋
Because of haemoglobin which makes up red blood cells.
2007-07-04 20:41:46 · answer #7 · answered by slj_princess 2 · 2⤊ 0⤋
It just shows how closely related all life is when it gets down to the real basics of what keeps us all going.
2007-07-05 02:09:32 · answer #8 · answered by Joan H 6 · 0⤊ 0⤋
haha dont tell me your 10 years old and above
2007-07-04 20:44:49 · answer #9 · answered by jaysINdireNEED 2 · 0⤊ 2⤋