Top 150+ Solved Breathing and Exchange of gases MCQ Questions Answer
Q. During inhalation the following activities occur
a. Area of rib cage increases, diaphragm is pulled upwards
b. Area of rib cage increases, diaphragm is pulled downward
c. Area of rib cage reduces, diaphram gets contracted
d. Area of rib cage reduces, diaphram gets relaxe
Q. In which three forms of CO2 is transported by blood
a. As a solution, carbamino compunds, bicarbonates
b. As a solution, carbamino proteins,KHCO3
c. As a solution, carbamino haemoglobin, NaHCO3
d. As A solution, carbamino compound H2CO3
Q. The centre which excites both the activities during rapid breathing is
a. Ventral respiratory center
b. Lateral respiratory center
c. Pneumotoxic center
d. Dorsal respiratory center.
Q. The function of pneumotoxic center is
a. To regulate inhalation
b. To maintain rhythmicity of respiration
c. Increases rate of ethalation
d. Does not play significant role.
Q. AIDS patients are susceptible to this respiratoty disease
a. Pneumonia
b. Fibrosis
c. Emphysema
d. Asthma
Q. The enzyme carbonic anhydrase is of which type?
a. Lyases
b. reversible
c. Unidirectional
d. Isomerase.
Q. What is role of buffer system in blood ?
a. To maintain pH of blood plasma
b. To maintain pH of blood
c. To maintain pH of RBC
d. To maintain pH of blood platelets
Q. Where Bicarbonate is conveted into carbonic acid
a. In the RBC of capillaries around the lungs
b. In the body fluid
c. In the areolar cavity of lungs
d. In the RBC of blood capillaries around body tissue.
Q. Maximum amount of O2 is transported in humans by
a. RBC
b. WBC
c. Blood platelets
d. Blood plasma