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Author Question: A 1-year-old female is diagnosed with anemia secondary to insufficient erythropoiesis. The most ... (Read 22 times)

Sufayan.ah

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on: Jun 25, 2018
A 1-year-old female is diagnosed with anemia secondary to insufficient erythropoiesis. The most likely cause is:
 
  a. genetic factors.
  b. an iron deficiency.
  c. a hemoglobin abnormality.
  d. an erythrocyte structural abnormality.

Question 2

Which of the following amino acids is present in Hb S and not present in normal Hb?
 
  a. Valine
  b. Glutamic acid
  c. Proline
  d. Histidine


nixon_s

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

ANS: B
The most common cause of insufficient erythropoiesis is iron deficiency, not genetic factors, not a hemoglobin abnormality, not an erythrocyte structural abnormality.

Answer to Question 2

ANS: A
Hb S is formed by a genetic mutation in which one amino acid (valine) replaces glutamic acid. Valine has replaced glutamic acid. Hb S is formed by a genetic mutation in the amino acid (va-line), not proline, or histidine.


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