A patient who has type B antigens on the surface of their erythrocytes and produces anti-A antibodies has type Blank______ blood.Multiple choice question.ABOAB

1. Break Down the Problem

To determine the blood type from the given information:

• The patient has type B antigens on their red blood cells.
• The patient produces anti-A antibodies.

2. Relevant Concepts

In the ABO blood group system, the following rules apply:

• Type A blood has A antigens and produces anti-B antibodies.
• Type B blood has B antigens and produces anti-A antibodies.
• Type AB blood has both A and B antigens and produces no antibodies.
• Type O blood has no A or B antigens and produces both anti-A and anti-B antibodies.

3. Analysis and Detail

Given that the patient has B antigens, they cannot have type A or type AB blood. Since they produce anti-A antibodies, they will react against blood that has A antigens. Therefore, the patient must have type B blood.

4. Verify and Summarize

The blood type is determined solely based on the presence of antigens and corresponding antibodies. Since the patient has B antigens and produces anti-A antibodies, this confirms that the patient's blood type is type B.

Final Answer

The patient has type B blood.