Key Area 2.3 - Metabolic Rate

Question 1

Alveoli

Answer 1

Microscopic parts of the gas exchange system in vertebrate lungs

Question 2

Atrium

Answer 2

Chamber receiving blood entering a vertebrate heart

Question 3

Complete double circulation

Answer 3

Double circulation with complete separation of oxygenated and deoxygenated blood e.g. In birds and mammals

Question 4

Double circulation

Answer 4

Blood flows through the heart twice during a full circulation of the body

Question 5

Incomplete double circulation

Answer 5

Double circulation with some mixing of oxygenated and deoxygenated blood e.g. In amphibians and some reptiles

Question 6

Low oxygen niche

Answer 6

Way of life in a habitat with little oxygen present such as at high altitude or in a deep ocean

Question 7

Metabolic rate

Answer 7

Rate of consumption of energy by an organism

Question 8

Single circulatory system

Answer 8

Blood flows through the heart once during a full circulation of the body e.g. In fish

Question 9

Ventricle

Answer 9

Chamber of a vertebrate heart that distributes blood

Question 10

VO 2 max

Answer 10

Maximum volume of oxygen that can be absorbed by an organism in a period of time