Human blood is red (negative)
Answers
Answer:
If the question is change to negative then the answer is
Human blood is not red.
Answer: Human Blood is red in colour due to the presence of RBCs (Red blood cells).
Explanation:
Blood grouping is determined by ABO typing. In Blood grouping, there are four different types of blood A, B, O and AB.
Each blood type contains some antibodies and antigens based on the location of the antibodies and antigens the blood type of an individual can be determined.
RBCs or red blood cells contain haemoglobin, which is a cell protein that acts as a carrier and transports oxygen to the body and in reverse takes up carbon dioxide from the cells and tissues from the organs back to blood. Hence, the presence of more haemoglobin indicates more RBCs.
Regarding, that how blood can be recognised as Positive or Negative, it depends on the Rh Factor.
Rh factor's presence in the blood itself is the characterization that blood is said to be Positive, and if Rh factor is not present on the surface of the blood cells it is characterized as Negative.
To know more about "Blood grouping" click on the link below
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