Most of the aquatic arthropods respire through:

(1) diffusion over entire body surface

(2) gills

(3) tracheae and tracheoles

(4) skin

 

(1) Total volume of air a person can inspire or expire after a normal inspiration or expiration

(2) Volume of air that will remain in the lungs after a normal expiration

(3) Maximum volume of air a person can breathe out after a forced inspiration

(4) Total volume of air accommodated in the lungs at the end of a forced inspiration

(1) Partial pressure of oxygen in deoxygenated blood and partial pressure of oxygen in tissues

(2) Partial pressure of carbon dioxide in alveoli and partial pressure of carbon dioxide in oxygenated blood

(3) Partial pressure of oxygen in oxygenated blood and partial pressure of oxygen in alveoli

(4) Partial pressure of carbon dioxide in tissues and partial pressure of carbon dioxide in deoxygenated blood

(1) 4 ml

(2) 5 ml

(3) 15 ml

(4) 20 ml

(1) RBCs contain a very high concentration of this enzyme

(2) The enzyme is absent in the plasma

(3) It facilitates the reaction catalyzed in both directions

(4) It is a metalloenzyme

(1) Chronic obstructive lung disease

(2) Bronchial asthma

(3) Viral Pneumonia in children

(4) Occupational lung diseases

(1) more sensitive to a decrease in PCO₂ than to a decrease in PO₂

(2) stimulated by hypocapnia

(3) located in the medulla oblongata of the brain stem

(4) more sensitive to a decrease in PO₂ than to a decrease in PCO₂