1. What is the cause of hemoglobinuria during night in paroxysmalnocturnal hemoglobinuria?
A) Deficiency of decay-accelerating factor (DAF)
B) Increased activation of complement
C) Decreased concentration of oxygen in the blood
D) Complement-mediated hemolysis

2. What is the deficiency in hereditary angioedema?
A) C1 inhibitor
B) Leukocyte adhesion
C) Neutrophil chemotaxis
D) C3a and C5a complement components

3. What is the likely cause of death in individuals with Chediak-Higashisyndrome?
A) Poor adhesion of neutrophils to endothelial surfaces
B) Defective neutrophil chemotaxis
C) Infections
D) Failure of helper T cells to produce gamma interferon