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Author Question: Which of the following increases the affinity of Hb for O2? 1. Decreased 2,3-DPG 2. Decreased PCO2 ... (Read 270 times)

ericka1

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on: Jul 16, 2018
Which of the following increases the affinity of Hb for O2? 1. Decreased 2,3-DPG 2. Decreased PCO2 3. Increased pH 4. Increased temperature
 
  a. 1, 2, and 3 only
  b. 1, 2, and 4 only
  c. 3 and 4 only
  d. 3 and 4 only

Question 2

The affinity of Hb for carbon monoxide (CO) is approximately how many times greater than its affinity for O2?
 
  a. 10 to 50 times greater
  b. 50 to 90 times greater
  c. 100 to 190 times greater
  d. 200 or greater


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Ksh22

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
An increased pH results in a right shift in the O2-hemoglobin dissociation curve resulting in a de-creased affinity.

Answer to Question 2

ANS: D
Carboxyhemoglobin (HbCO) is the chemical combination of hemoglobin with CO. Hemoglobin's affinity for CO is more than 200 times greater than it is for O2.


ericka1

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Reply #2 on: Jul 16, 2018
TY


Ksh22

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Reply #3 on: Jul 16, 2018
Happy to Help


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