The majority of CO2 transport is in the form of

• hydrogen carbonate (bicarbonate)

• carbomino haemoglobin

• CO2 in solution

What enzyme is required for CO2 to be combined with water to make carbonic acid?

• carbonic anhydrase

• carbonic acid

• carbonase

Blood returning from the body enters the

• right atrium

• left atrium

• left ventricle

• right ventricle

What is the partial pressure of O2 at respiring tissues?

• high

• low

What are the 4 components of blood?

• White blood cells, Platelets, bone marrow, and oxygen
• Plasma, Platelets, yellow blood cells, and nutrients
• Plasma, White blood cells, red blood cells, and Platelets
• Platelets, Red blood cells, antigens, and Rh factor

What do capillaries, the smallest blood vessels, do?

• Exchange O2 only
• Exchange CO2 only
• exchange nutrients and  oxygen for waste 
• break down foods

Carbonic anhydrase in the erythrocytes …

• Catalyzes the removal of oxygen from the erythrocytes.

• Catalyzes the conversion of carbon dioxide into water.

• Catalyzes the reaction of carbon dioxide with water to form carbonic acid.

• Catalyzes the increase in blood pH.

The ion found in the haem group is what

• Mg²⁺

• O^2-

• Fe²⁺

• Fe³⁺

The Bohr Effect/Shift moves the oxygen saturation curve in what direction

• up and left

• down and right

• down and left

• up and right

What colour line represents the oxygen saturation curve during intense exercise?

• blue

• black

• red