A cell membrane can me compared to a wall, one that is flexible and malleable but strong enough to repel unwanted things from the cell. it also keeps the cell together in its shape and form
Why am I always answering people questions when they should answer mine
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.
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Answer:
B. respiratory illness
Explanation:
Air pollution causes humans to breathe unhealthy air which can lead to respiratory illnesses.
