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Author Question: Which of the following is true for the relative affinity of hemoglobin for oxygen in the lungs and ... (Read 110 times)

captainjonesify

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on: Jun 25, 2018
Which of the following is true for the relative affinity of hemoglobin for oxygen in the lungs and tissue with the oxygen dissociation curve in its normal position?
 
  Lungs Tissue
 
  a. High Low
  b. Low Low
  c. High High
  d. Low Low

Question 2

Identify the primary organelle of synthesis site for globin chain and heme in developing RBCs.
 
  Globin chains Heme
 
  a. Ribosomes Ribosomes
  b. Golgi complex Mitochondria
  c. Ribosomes Mitochondria
  d. Mitochondria Golgi complex


livaneabi

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

ANS: A
The affinity of hemoglobin for oxygen is high in the lungs, so that loading of hemoglobin with oxygen is facilitated. It is lower in tissue to facilitate the delivery of oxygen to tissue.

Answer to Question 2

ANS: C
Globin chains are synthesized on the ribosomes in the cytoplasm of a developing RBC; heme synthesis takes place primarily in the mitochondria.


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