Question

Please answer the following:

Are the following answers correct?

1. Which is NOT ture regarding 2,3-bisphosphoglycerate?

a. It binds to oxygen <-- FALSE

b. It binds in the central cavity of hemoglobin

c. It prevents oxygen binding

d. It stabilizies deoxyg hemogloblin

2. The Fe binds all of the following except ______________

a. Proximal His

b. Several N of the Heme group

c. Distal His

d. Oxygen <-- CORRECT

3. The shape of hemoglobin binding oxygen is ________ while that of myoglobin is _________

a. Signmoidal, hyperbolic <-- CORRECT

b. Signmoidal, linear

c. Hyperbolic, sigmoidal

d. Linear, hyperbolic

4. What are the axes of the fractional oxygen binding cureve for myoglobin or hemoglobin?

a. Y O2 and pressure of O2 (torr or atm) <-- CORRECT

b. pH and moles OH-

c. Lungs and tissues

d. Y and X

5. Which amino acid lowers myoglobin or hemoglobin's ability to bind CO?

a. Lysine

b. Arginine

c. Proximal His

d. Distal His <-- CORRECT

Thank you very much.

Answer 1

1. Which is NOT ture regarding 2,3-bisphosphoglycerate?

a. It binds to oxygen <-- FALSE

2. The Fe binds all of the following except ______________

d. Oxygen <-- CORRECT

3. The shape of hemoglobin binding oxygen is ________ while that of myoglobin is _________

a. Signmoidal, hyperbolic <-- CORRECT

4. What are the axes of the fractional oxygen binding cureve for myoglobin or hemoglobin?

a. Y O2 and pressure of O2 (torr or atm) <-- CORRECT

5. Which amino acid lowers myoglobin or hemoglobin's ability to bind CO?

d. Distal His <-- CORRECT