Zoology Quiz 1

When CO² concentration in blood increases breathing becomes

• Shallower and slow

• There is no effect on breathing

• Slow and deep

• Faster and deeper

During inspiration , the sternum moves

• Backward and downward

• Backward and upward

• Forward and upward

• Forward and downward

The vital capacity of human being is about

What would happen if human blood becomes acidic ( low pH ) ?

• Oxygen carrying capacity of haemoglobin increases

• Oxygen carrying capacity of haemoglobin decreases

• RBCs count increases

• RBCs count decreases

Amount of O² normally carried by 100mL of pure blood is

The chemical formula of oxyhaemoglobin is

• Hb(O2)4

• Hb(O3)4

• H2B2O4

• H3B2O8

Residual air mostly occurs in

• Alveoli

• Bronchus

• Nostrils

• Trachea

The majority of CO2 produced by body cells is transported to the lungs

• As carbonates

• Attached to haemoglobin

• Dissolved in the blood

• Turgid pressure

A spirometer can be used to directly measure

• Inspiratory capacity

• Residual volume

• Total lung capacity

• None

The most characteristic feature of haemoglobin is

• Its red colour

• Presence of iron

• Its ability to combine reversibly with oxygen

• Presence of basic protein globin