CO2 is produced during cellular respiration; it is an/a…….. gas.
a) acidic
b) alkaline
c) neutral
d) amphoteric
Accumulation of …….. can make blood and other body tissues more acidic.
a) Oxygen
b) CO2
c) iron
d) salt
Exchange of Co2 from blood and accumulation of O2 in blood occur in
a) Liver
b) capillary
c) alveoli
d) bronchi
In cold condition the hair on the skin stand up and …….. is formed on
skin
a) sweeting
b) water
c) contraction
d) goose bumps
In warm condition she skin provides a cooling
effect when sweet is produced by …….
a) kidney
b) lungs
c) alveoli
d) sweat glands
………..helps in the removal of some amount of extra water, salts and nitrogenous wastes from body.
a) blood
b) respiration
c) sweating
d) NaCl
