Question

which are characteristics of type o blood?
a. has anti-a antibodies
b. has anti-b antibodies
c. has surface antigen o on its erythrocytes
d. has surface antigen a on its erythrocytes
e. has neither surface antigen a nor b on its erythrocytes
multiple choice
a, b, c
a, b, e
b, c, e
b, c, d
c

Explanation:

Type O blood has no A or B surface antigens on erythrocytes (matches option e), and naturally produces anti-A (option a) and anti-B (option b) antibodies in the plasma. There is no "surface antigen O"; the O classification refers to the absence of A/B antigens, so option c is incorrect, and option d is a feature of type A blood.

Answer:

a, b, e