Exploring Blood Typing Techniques

What is the purpose of the three wells in the blood typing kit?

• To hold different types of blood samples

• To separate blood cells based on size

• To test for A, B, and Rh factors

• To store excess reagents

What does the Anti-A serum react against?

• None of the antigens

• A antigens

• Rh antigens

• B antigens

Why is it important to use different sticks for mixing each well?

• To prevent breaking the sticks

• To avoid contamination between samples

• To speed up the mixing process

• To differentiate the wells visually

What should you do to ensure you can clearly see the results of the blood typing test?

• Use a magnifying glass

• All of the above

• Read results against a white background

• Increase the lighting in the room

What indicates a positive Rh factor in the blood sample?

• Smooth texture in the Rh well

• Clumping in the Rh well

• Color change in the Rh well

• No change in the Rh well

What is the result for a blood sample with clumping in the A well and clear in the B and Rh wells?

• A positive

• A negative

• AB negative

• O positive

Which blood type shows clumping only in the B well and Rh well?

• B positive

• AB positive

• A negative

• O positive

How many total blood types are humans known to have?

• Eight

• Ten

• Six

• Four

What blood type is indicated by clumping in both A and B wells but not in the Rh well?

• AB positive

• O negative

• B positive

• AB negative

What does the absence of clumping in all wells indicate?

• O negative

• AB positive

• A positive

• B negative