Rough er are flattened spaces while smooth er are tubular
rough er have ribosomes attached to its outer surface while smooth er does not
rough er plays a part in protein synthesis, while smooth er synthesises fats and steroids, and also detoxifies harmful substances
Persons with O blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibody anti-b in their plasma.
ABO blood grouping was discovered by Austrian scientist Landsteiner. It consist of four blood groups- A, B, AB, & O.
Red blood cells have certain extension of the proteins that are called antigen. Two types of antigens are there antigen a & b. The RBCs which have a particular antigen will not have the antibody against the same.
Blood Group A has antigen A and antibody B. Blood group B has antigen B and antibody A. Blood group AB has both antigen and no antibodies while blood group O has no antigen and antibody A & B.
To learn more about red blood cells here
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Matter is not created or destroyed at any time or place, it only changed from one form to another.
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Well, the cows may reproduce more or less, or they may vary in actions like eat more, act strange/or as wanted, or react to their sorroundings differently. Genetically altered cows may also be affected in the forms of health, diet, and the way they look.