2.3

Question 1

Metabolic rate

Answer 1

The amount of energy an organism will use within a given time

Question 2

Metabolic rate

Answer 2

The amount of energy an organism will use within a given time

Question 3

How can metabolic rate be measured

Answer 3

•Oxygen consumption (respirometer)
•Carbon dioxide production (above)
• Heat production (calorimeters)

Question 4

Birds and mammals have a __________ than reptiles and amphibians

Answer 4

Higher metabolic rate, therefore have a higher rate than fish

Question 5

Fish’s system?

Answer 5

Single circulatory system and consists of two atria and one ventricle

Question 6

Amphibians and reptiles systems?

Answer 6

Incomplete double circulatory system consisting of two atria and one ventricle

Question 7

Complete double circulatory systems

Answer 7

Enable higher metabolic rates to be maintained, no mixing of oxygenated and deoxygenated blood, oxygenated can be pumped out at a higher pressure, enables efficiency