Metabolic Rate

Question 1

Define the term ‘Metabolic Rate’?

Answer 1

The metabolic rate of a living organism refers to the speed with which energy is used up to survive.

Question 2

How do we COMPARE metabolic rates?

Answer 2

• Measurement of oxygen consumption, carbon dioxide and heat production.

Question 3

How do we MEASURE metabolic rates?

Answer 3

• Metabolic rates can be measured using respirometers, oxygen probes, carbon dioxide probes and calorimeters.

Question 4

What do organisms with high metabolic rates require?

Answer 4

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

Question 5

Describe the circulatory system within Birds and Mammals?

Answer 5

Birds and Mammals have a complete double circulatory system, consisting of two atria and two ventricle.

Question 6

Describe the circulatory system within amphibians and reptiles?

Answer 6

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

Question 7

Describe the circulatory system within Fish?

Answer 7

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

Question 8

Explain the complete double circulatory system?

Answer 8

Complete double circulatory systems enable higher metabolic rates, to be maintained. No mixing of deoxygenated blood and the oxygenated blood can be pumped out at a higher pressure. This enable more efficient oxygen delivery to cells