ASVAB General Science Practice Test 413571

Question 2 of 5
Blood Types

Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.

Antigens in the blood determine:

negative or positive status

blood oxygen capacity

Rh factor

blood type