Question

Jesse is studying a blood sample that has only antigen B on the red blood cells and antibody A in the plasma. What is the type of the blood sample?

A+
A–
B+
B–

Answer 1

B+

Step-by-step explanation:

• The blood type of the person is determined by the surface antigens on the red blood cells.
• If an organism has antigen B on the surface, then he must be type B and the antibodies in the body must be against A (anti-A).
• The + or - sign refers to the presence or absence of the Rh antigen, respectively on the red blood cells.
• Since in the blood sample on the antigen B is present on the RBC then we can infer that the blood type is B+.

Answer 2

Option: B+

Step-by-step explanation:

The test to determine a blood group is called ABO typing. The blood sample is mixed with antibodies against type A and B blood. Then, the sample is checked whether or not the blood cells stick together. If blood cells stick together, it means the blood reacted with one of the antibodies.

B+ blood group:

A blood sample that has only antigen B on the red blood cells and antibody A in the plasma lies under B+ blood group.

B+ blood type means the person has antigen B and rhesus factor on RBC and could be able to receive blood from another B+ donor.

Please note:

As only antigen B is mentioned that is why we will consider B+ BLOOD group. Because negative antigen is not mentioned in the question and when there is no sign is mentioned we will consider it positive.