AB can receive any blood type (depending whether you are - or +)
a person with O+/- blood can only receive O+/- blood respectively. O+ can give blood to any other + blood type, and O- can give blood to anyone.
A person who is able to receive any blood type.
If a person has AB type blood then they can receive any type of blood. A extra factor you have to take into account is whether they are AB positive or AB negative. An AB+ person can take any blood while an AB- person can take any blood as long as its negative. For a chart showing the blood type compatibility see http://en.wikipedia.org/wiki/Blood_types#Red_blood_cell_compatibility
No, quite the opposite, a person with O- can only receive blood from another O- person.
A person who can receive any blood type during a blood transfusion.
A person with type AB blood. People with type O cannot receive from anyone except O.
Generally the only time blood type compatability is important is during a blood transfusion. At this time it is essential that the recipient be given a blood type they are compatible with to avoid a fatal reaction. A person with AB blood can receive blood for anyone. A person with A blood can only receive blood from someone who has either A or O blood. Similarly a type B person can receive only from type B or O. A type O person can donate to any bloodtype, but can only receive from another type O person.
I assume you are meaning in a transfusion. The ideal blood should be a perfect match. A positive should get A positive. In an emergency an A positive can receive any blood that has no B genotype. O+/-, A+/-,but NO B or AB.
No, they cannot. A person with O+ blood has a special antigen, or protein, on its extracellular membrane. The person with O- blood will form antibodies to the antigen and attack the O+ red blood cells killing them, this will eventually cause anemia and become a health problem.
Type ab blood can receive types a, b, ab, and o blood, not just type ab blood. Type ab is known as the "universal receiver", as it can receive any blood type, while type o is the "universal donor", meaning type o can be given to any person.
Type O blood is considered the universal blood donation type. Someone with type O blood can donate their blood to anyone of any blood type. So yes, your mother could definitely benefit from your blood if you were to donate it to her.