ZCC

Solve:

1. An increase in the CO2 concentration shifts the shape of oxyhaemoglobin dissociation curve to the right. The phenomenon is known as:
A) Bohr's effect. B) Hamburger's effect
C) Newton's effect. D) None

2. What are the respective percentages of O2 in air we inhale and exhale?
A) 16.3; 3.00. B) 20.94; 16.30. C) 20.94; 00. D) 20.3; 3.00

3. According to modern view the blood that enters the lungs of frog is:
A) Oxygenated. B) Mixed. C) Deoxygenated. D) Low in glucose level

4. The stage when a lung collapses, specially the alveoli is:
A) Atelactasis. B) Poliomyelities. C) Asthma
D) Epistasis

5. Oxyhaemoglobin is an unstable compound because :
A) 1 Hb molecule binds 4 02 molecule
B) Hb is a complex pigmented protein
C) Hb is contained within RBCs
D) 02 and Hb are not chemically bounded but only physically combined