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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.
You are able to receive type A, type B and type AB you can receive any type of blood.
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.
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.