In respiration, organisms need to take …..….from environment and release.…… into the environment.
a) N2 and S
b) H2O,NaOH
c) oxygen, Nitrogen
d) Oxygen, CO2
The primary chemical stimulus for breathing is the concentration of…………
a) carbon monoxide in the blood
b) carbon dioxide in the blood
c) oxygen in the blood
d) carbonic acid in blood
The volume of air that can be exhaled after normal exhalation is the
a) tidal volume
b) residual volume
c) inspiratory reserve volume
d) expiratory reserve volume
In respiration ,………….are broken down into simple compounds
a) Water
b) oxygen
c) food
d) ATP
Oxygen is required for the…of food molecules.
a) Reduction
b) Oxidation
c) Combustion
d) Redox reaction
In cellular respiration oxygen is used to oxidize food and ………is produced.
a) N
b) O
c) CO2
d) H2
