Respiratory Systems in Humans and Animals

Which of the following does not transport carbon dioxide in the blood to the lungs?

• Carbaminohaemoglobin

• Carbonic acid

• Sodium bicarbonate

• Carboxyhaemoglobin

Which are the characteristics that enable the alveolus to carry out gaseous exchange efficiently?

• A large surface area

• A layer of moisture on its surface

• A network of blood capillaries around it

• A layer of fat on its surface

Which structures are involved in the human gaseous exchange system?

• Trachea

• Bronchus

• Bronchiole

• Alveolus

Which of the following organisms does not have a specialised respiratory system?

• Frog

• Grasshopper

• Paramecium sp.

• Snake

Which of the following is not an important characteristic for gaseous exchange in mammals?

• Thin membrane

• Large surface area

• Soft membrane surface

• A network of blood capillaries

In an inactive state, the frog uses its skin for gaseous

exchange

• True

• False

The respiratory structure is complete with a network of blood capillaries (except insects), that allows

for efficient transport of respiratory gases.

• True

• False

Which of the following statement is true about the adaptation of lungs for gaseous exchange in frog?

• The thin lung membrane eases the diffusion of respiratory gases

• The lungs does not have a network of blood capillaries

• The floor of the mouth cavity always moves up and down to enable gaseous exchange

• The inner walls of the lungs are not folded to increase the rate of diffusion of gases