Gas transport- oxygen and carbon dioxide

What is the general chemical equation for the respiration process where oxygen and carbon dioxide are involved?

• C_xH_y + O_2 → CO + H_2O

• C_xH_y + O_2 → CO_2 + H_2O

• C_xH_y + CO_2 → O_2 + H_2O

• O_2 + CO_2 → C_xH_y + H_2O

Based on the bottom right image, what color is the blood of the animal depicted?

• Blue

• Red

• Green

• Clear

What can be inferred about the blood color of the animals in the bottom left image?

• Blue

• Red

• Green

• Clear

What is required for O2 transport in the respiratory system?

• Binding to digestive enzymes

• Binding to respiratory pigments

• Binding to carbohydrates

• Binding to lipids

What process do respiratory pigments undergo with molecular oxygen?

• Oxidation

• Oxygenation

• Reduction

• Carbonation

What type of proteins are all respiratory pigments classified as?

• Glycoproteins

• Lipoproteins

• Metalloproteins

• Fibrous proteins

Which is the most common type of respiratory pigment?

• Haemocyanins

• Haemoglobins

• Haemerythrins

• Chlorocruorins

Haemocyanins are primarily found in which types of organisms?

• All vertebrates

• Arthropods and molluscs

• Sipunculids and brachiopods

• Marine annelid worms

Which respiratory pigment is associated with the metal ion Fe2+?

• Haemocyanins

• Haemoglobins

• Haemerythrins

• Chlorocruorins

Haemerythrins are found in which of the following?

• All vertebrates

• Arthropods and molluscs

• Sipunculids and brachiopods

• Marine annelid worms