Chapter 9

How do antigens determine blood type?

• The presence or absence of 2 antigens determines an individual's blood type

• Blood type is determined by the number of red blood cells

• Antigens have no effect on blood type

• Blood type is determined by the presence of antibodies

A blood sample agglutinates when mixed with anti-A but does not when mixed with anti-B and anti-D. What is the blood type?

• A+

• A-

• B-

• O+

Which antigen(s) must be determined in testing for blood type compatibility?

• A, B, and D (Rh)

• A, C, and D (Rh)

• B, C, and D (Rh)

• A, B, and C

What is agglutination?

• A process where red blood cells clump together due to an antibody

• A method of blood transfusion

• A type of blood cell production

• A technique for separating blood components

What type of antibodies does one with type O blood have?

• A antibodies only

• B antibodies only

• Both A and B antibodies

• Neither A nor B antibodies

What is meant by a homozygous gene pair?

• A homozygous gene pair is made up of two similar alleles

• A homozygous gene pair consists of one dominant and one recessive allele

• A homozygous gene pair is made up of two different alleles

• A homozygous gene pair refers to genes located on different chromosomes

What test do you use to determine whether a blood stain is of animal or human origin?

• Precipitin test

• Blood type analysis

• DNA sequencing

• Microscopic examination

What is the blood type distribution in the US?

• O- 43%

• A- 42%

• B- 12%

• AB- 5%

What is the D antigen also known as?

• Rh antigen

• A antigen

• B antigen

• O antigen

A blood sample agglutinates when mixed with anti-A, anti-B, and anti-D. What is the blood type?

• A+

• B-

• AB+

• O-