Metabolic Rate - Learning outcomes/ questions

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

Organisms with high metabolic rates require what?

Answer 2

Organisms with high metabolic rates require more efficient delivery of oxygen to cells.

Question 3

Birds and mammals have a what metabolic rate than reptiles and amphibians which have a what metabolic rate then fish?

Answer 3

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

Question 4

Birds and mammals have a what circulatory system consisting of what?

Answer 4

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

Question 5

Amphibians and most reptiles have a what circulatory system consisting what?

Answer 5

Amphibians and most reptiles have an incomplete double circulatory system consisting of two atria and one ventricle.

Question 6

Fish have a what circulatory system consisting of what?

Answer 6

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

Question 7

Complete double circulatory systems enable what?

Answer 7

Complete double circulatory systems enable higher metabolic rates to be maintained as there is no mixing of oxygenated and deoxygenated blood, and the oxygenated blood can be pumped out at a higher pressure.

Question 8

Complete double circulatory systems enable higher metabolic rates to be maintained as there is no mixing of oxygenated and deoxygenated blood, and the oxygenated blood can be pumped out at a higher pressure. What does this enable?

Answer 8

This enables more efficient oxygen delivery to cells.