Why Are Infants with B-Thalassemia Major Not Ill Until Approximately

question 13

Multiple Choice

Why are infants with b-thalassemia major not ill until approximately 6 months of age?

• A)Infants are protected by their high concentration of Hb F.
• B)Infants have less need for hemoglobin because of their small body size.
• C)Infants have less need for hemoglobin because of their smaller lung capacity.
• D)Infants have a high red count and thus higher hemoglobin from a higher than normal concentration of erythropoietin.

---

Definitions:

ATC

Average Total Cost, which is the total cost of production divided by the number of goods produced, representing the per unit cost of production.

AVC

Average Variable Cost is the total variable costs divided by the quantity of output produced; it represents the variable cost per unit of output.

Optimal Plant Size

The scale of production at which a firm can produce goods at the lowest average cost, maximizing efficiency.