Question

Fill in the blanks:
a. Exhaled air has more ___ and less ___ in it than
inhaled air.
b. Oxygen is used for ___ of food.
c. The number of times air is inhaled or exhaled in a minute is called ___
d. Oxygen diffuses from air is the ___ to the blood in capillaries in the lungs.
e. Oxygen combines with haemoglobin to form ___​

Answer 1

ANSWER:

a. Exhaled air has more carbon dioxide and less oxygen in it than inhaled air.

b. Oxygen is used for breakdown of food.

c. The number of times air is inhaled or exchaled in a minute is called breathing rate.

d. oxygen diffuses from air in the alveoli to the blood in the capillaries in the lungs.

e. oxygen combines with haemoglobin to form oxyhaemoglobin.