Metabolic Rate

Question 1

What can metabolic rate be measured with?

Answer 1

Respirometers, oxygen probes, Caron dioxide probes and calorimeters

Question 2

What compares metabolic rates?

Answer 2

Measurement of oxygen consumption, Carson dioxide and heat production

Question 3

What do organisms with a high metabolic rate require more of ?

Answer 3

They require more efficient delivery of oxygen to cells

Question 4

Describe a bird and mammals metabolic rate:

Answer 4

• they have a higher metabolic rate than reptiles and amphibians meaning they have a higher metabolic rate than fish.

Question 5

Describe a bird and mammals heart:

Answer 5

They have a complete circulatory system consisting of two atria and two ventricles

Question 6

Describe a amphibians and reptiles heart:

Answer 6

Have an incomplete double circulatory system consisting of two atria and one ventricle.

Question 7

Describe a fishes heart:

Answer 7

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

Question 8

Advantages of a complete double circulatory system:

Answer 8

• they enable higher metabolic rates to be maintained.

There’s no mixing of oxygenated and deoxygenated blood and the oxygenated blood can be pumped out at a higher pressure.