Loading....
Coupon Accepted Successfully!

Physiology

Open Flashcards

Respiration

Question
16 out of 16
 

Haemoglobin unlike myoglobin show



A Parabolic curve of oxygen association

B Positive cooperativity

C Dissolved form

D CO

Ans. B Positive cooperativity

I. Hb - O2 dissociation curve sigmoid curve Q

II. Myoglobin - O2 dissociation curve Rectangular hyperbola Q

III. Hb combines with 4 mole of O2Q

IV. Myoglobin combines with 1 mole of O2Q

V. (Cooperative effect to combine O2) Q

VI. Unlike Myoglobin, hemoglobin shows: Q

a. Tetrameric structure Q

b. Can bind four O2 molecule Q

c. Sigmoid saturation kinetics Q

Co-operativity (positive) or co-operative binding kinetics, a property that permits it to bind a maximal quantity of O2 at the respiratory organ and to deliver a maximal quantity of O2 at peripheral tissue. Here binding of heme in Hb molecule with O2 facilitates/promotes binding of other O2 molecule thus positive co-operativity. Q

Respiration Flashcard List

16 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)