Question

1. True or False: The affinity of hemoglobin and oxygen is decreased rapidly in tissues undergoing rapid metabolism such as exercising muscles.
   
   
   

2. (1 point) True or False: Most fish use tidal ventilation to move water in and out of the respiratory epithelium surface.

Answer 1

Ans1:- True

When muscle is metabolically active it produce lots of lactic acid and carbon dioxide . This decreases the pH of tissue. And according to bohr's law we know that when ph decreases the affinity of haemoglobin deceased for oxygen. Because H+ have more affinity for Hb then oxygen.

Ans2:- True.

Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish's cells.