HARD
AS and A Level
IMPORTANT
Earn 100

The following statement was made by candidate in an examination answer. Explain what is wrong with this statement.

Oxyhaemoglobin gradually releases its oxygen as it passes from the lungs to a muscle.

Important Questions on Transport in Mammals

HARD
AS and A Level
IMPORTANT

The following statement was made by candidate in an examination answer. Explain what is wrong with this statement.

Strong walls of the arteries enable them to pump blood around the body.

HARD
AS and A Level
IMPORTANT

The following statement was made by candidate in an examination answer. Explain what is wrong with this statement. 

Most carbon dioxide is transported in solution in the plasma.

HARD
AS and A Level
IMPORTANT

Identify the time in which each stage in the given figure is occurring.

Question Image    

 

 

HARD
AS and A Level
IMPORTANT
Heart valves can become weakened and fail to close effectively. Suggest how this would affect the function of the heart and the health of a person.
HARD
AS and A Level
IMPORTANT
What causes the bicuspid valve to close during ventricular systole?
HARD
AS and A Level
IMPORTANT

Carbon dioxide is transported in the blood in different forms. Describe how carbon dioxide molecules reach red blood cells from the respiring cells.

HARD
AS and A Level
IMPORTANT

Question Image

The diagram above shows part of a capillary network and surrounding tissues.

State three ways in which the blood at Y differs from the blood at X other than the concentration of carbon dioxide.