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Author Question: What is the basic hemoglobin defect in the thalassemias? a. One of the globin chains has an amino ... (Read 130 times)

ahriuashd

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on: Jun 25, 2018
What is the basic hemoglobin defect in the thalassemias?
 
  a. One of the globin chains has an amino acid substitution.
  b. A structurally normal globin chain is absent or produced at lower levels.
  c. Heme is produced at a lower concentration.
  d. Iron is not incorporated into the protoporphyrin ring to form heme.

Question 2

Heinz bodies are found when hemoglobin:
 
  a. Precipitates
  b. Has higher oxygen affinity
  c. Concentration is decreased
  d. Forms crystals


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Edwyer

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
The thalassemias are a varied group of disorders in which the synthesis of a normal globin chain is reduced or absent. The globin chains that are made are normal in amino acid structure.

Answer to Question 2

ANS: A
Heinz bodies are found when hemoglobin is unstable and precipitates.


ahriuashd

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Reply 2 on: Jun 25, 2018
Gracias!

kthug

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Reply 3 on: Yesterday
Excellent

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