Home / Trivia / People & Human Body
Which blood type can be given to almost anyone in an emergency as red cells?
Confirmed
O negative
O negative red cells lack A, B and Rh antigens, so they are the 'universal donor' type for red cells.
How many bones does a typical adult human have?About what share of the body's energy does the brain use, though it is only about 2% of body weight?Are fingerprints different between identical twins?About how many times does a resting adult heart beat in a day?Which sense is most closely tied to memory and emotion?About how much of an adult's body weight is water?