2.3 Metabolic Rate

Question 1

How can metabolic rate be measured?

Answer 1

Metabolic rate can be measured using respirometers, oxygen probes, carbon dioxide probes and calorimeters

Question 2

What is the order of highest metabolic rate to lowest metabolic rate?

Answer 2

Birds and mammals have higher metabolic rates than reptiles and amphibians which in turn have higher metabolic rates than fish

Question 3

What type of circulatory system to birds and mammals have?

Answer 3

Birds and mammals have a complete double circulatory system consisting of two atria and two ventricles

Question 4

What type of circulatory system do reptiles and amphibians have?

Answer 4

Reptiles and amphibians have an incomplete double circulatory system consisting of two atria and one ventricle

Question 5

What type of circulatory system do fish have?

Answer 5

Fish have a single circulatory system consisting of one atrium and one ventricle

Question 6

What are the benefits of complete double circulatory systems?

Answer 6

They enable higher metabolic rates to be maintained, there is no mixing of oxygenated and deoxygenated blood and the oxygenated blood can be pumped out at a higher pressure. This enables more efficient oxygen delivery to cells