BCBIO24_LAB CA

Which antigen is present on red blood cells of a person with blood group A?

• B antigen

• A antigen

• AB antigens

• No antigens

A person with blood group O has which antibodies in their plasma?

• Anti-A only

• Anti-B only

• Both Anti-A and Anti-B

• No antibodies

What determines the ABO blood group?

• Enzymes in plasma

• Presence of antigens on RBCs

• Hemoglobin levels

• Size of RBCs

Which of the following is true for blood group AB?

• Has A and B antibodies

• Lacks A and B antigens

• Has both A and B antigens

• Can donate to all blood groups

Which blood group is considered the universal donor?

• AB+

• A-

• O-

• O+

The Widal test is used to diagnose:

• Tuberculosis

• Malaria

• Typhoid fever

• Dengue fever

The Widal test detects:

• Antigens

• Antibodies against Salmonella

• Bacteria in stool

• DNA of virus

Which antigens are detected in the Widal test?

• Vi and H only

• O and H

• A and B

• IgA and IgG

Widal test is based on which principle?

• Precipitation

• Agglutination

• Neutralization

• Immunodiffusion

A monohybrid cross involves how many traits?

• Two

• One

• Three

• Four