BB- Practice QUIZ 1

The oberservable expression of the genes inherited by a person is referred to as the a. phenotype b. allele c. frequency d. genotype

a. phenotype

In the invitro antibody-antigen reaction the condition of antibody excess is referred to as a. prozone b. equilibrium c. van der waals force d. zeta pottiental

a. prozone

At what temperature do IgG antibodies react optimally? a. 22C b. 37C c. 56C d. 4C

b. 37C

A patient is in need of a 2 unit transfusion. Upon workup you discover that the patient has 3 acquired antibodies -k, Jka, and c. with the negative phenotypes of 91%, 23%, and 20% respectfully. How many units of blood must be screened to find 2 units negative for the phenotypes K, Jka, and c. a. 100 b. 50 c. 150 d. 75

b. 50

What does hemolysis represent in an antigen-antibody reaction? a. A negative result b. A positive result c. An inconclusive result d. None of the above

b. A positive result

The following is not an environmental factor in the Antibody-Antigen reaction a. time b. immunomodulation c. pH d. Ionic strength

b. immunomodulation

In the MN blood group system, a person who inherits an "M" allele and an "N" allele expresses both M and N antigens on the RBCs. Which of the following is true? a. M is dominant to N b. N is dominant to M c. M and N are codominant alleles d. M and N are located on the same chromosome

c. M and N are codominant alleles

An AB Negative Father and an AB Negative mother can have children of the following blood types except a. B negative b. A negative c. AB negative d. O negative

d. O negative

What is not characteristic of the IgM immunoglobulin? a. room temperature reactive b. large pentameter c. demonstrable at immediate spin phase d. can cross the placenta

d. can cross the placenta

The overservable difference in strength of reaction, based on homozygosity or heterozygosity for an allele is termed the a. Van der waals forces b. prozone c. zone of equivalance d. the dosage effect

d. the dosage effect