Worksheet 7.2 Gaseous Exchange Across The Respiratory Surfaces And Transport Of Gases In Humans 1h131c
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Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
Score __ /__ ____ WORKSHEET 7.2 Gaseous Exchange across the Respiratory Surfaces and Transport of Gases in Humans 1.
a.
Complete the figure below ______________ blood back to the heart
___________________blood from the heart
oxygen
[ 2 marks ]
carbon dioxide b. Match the features of alveoli to their functions A large number of alveoli in the lungs Walls are made of a single layer of cells
Gases can dissolve in the moisture and diffuse easily across walls Can transport oxygen to and carbon dioxide away from the cells
Walls secrete a thin lining of moisture
Gases can diffuse easily across thin walls
Surrounded by a network of blood capillaries
Increase surface area for exchange of gases
[ 4 marks ]
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
2. The diagram below shows the exchange of gases in the lungs and the transport of blood to the body cell. Study the figure below and complete the sequence . 7.2/1
In the alveolus, high _________ pressure of __________ Oxygen _________ into the blood capillaries
Oxygen combines with the _____________ to form __________________
Oxyhaemoglobin is transported to the ___________
In the cells _______partial _____________ of oxygen
oxyhaemoglobin breaks down and releases _________ and_____________ _________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
haemoglobin combines with __________________ to form ______________________
In the blood capillaries near the alveolus wall, carbaminohaemoglobin breaks down to ______________and________________
[ 14 marks ] ANSWERS
7.2/2
WORKSHEET 7.2 Gaseous Exchange across the Respiratory Surfaces and Transport of Gases in Humans 1.
a.
Complete the figure below
Oxygenated blood back to the heart
Deoxygenated blood from the heart
oxygen carbon dioxide b.
Match the features of alveoli to their functions A large number of alveoli in
Gases can dissolve in the
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
the lungs Walls are made of a single layer of cells
2.
moisture and diffuse easily across the walls Can transport oxygen to and carbon dioxide away from the cells
Walls secrete a thin lining of moisture
Gases can diffuse easily across thin walls
Surrounded by a network of blood capillaries
Increase surface area for exchange of gases
Diagram below shows the exchange of gaseous in the lungs and the blood transportation to the cell. Study the figure below and complete the sequence . 7.2/3 7.2/1
In the alveolus, high partial pressure of oxygen Oxygen diffuses into the blood capillaries Oxygen combines with the haemoglobin to form oxyhaemoglobin
Oxyhaemoglobin is transported to the cells
In the cells low partial pressure of oxygen
oxyhaemoglobin breaks down and releases oxygen and haemoglobin
haemoglobin combines with carbon dioxide to form
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
carbaminohaemoglobin
In the blood capillaries near the alveolus wall Carbaminohaemoglobin breaks down to carbon dioxide and haemoglobin
7.2/4 7.2/1
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Chapter 7 Respiration
__________________________________________________________________________________________
Score __ /__ ____ WORKSHEET 7.2 Gaseous Exchange across the Respiratory Surfaces and Transport of Gases in Humans 1.
a.
Complete the figure below ______________ blood back to the heart
___________________blood from the heart
oxygen
[ 2 marks ]
carbon dioxide b. Match the features of alveoli to their functions A large number of alveoli in the lungs Walls are made of a single layer of cells
Gases can dissolve in the moisture and diffuse easily across walls Can transport oxygen to and carbon dioxide away from the cells
Walls secrete a thin lining of moisture
Gases can diffuse easily across thin walls
Surrounded by a network of blood capillaries
Increase surface area for exchange of gases
[ 4 marks ]
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
2. The diagram below shows the exchange of gases in the lungs and the transport of blood to the body cell. Study the figure below and complete the sequence . 7.2/1
In the alveolus, high _________ pressure of __________ Oxygen _________ into the blood capillaries
Oxygen combines with the _____________ to form __________________
Oxyhaemoglobin is transported to the ___________
In the cells _______partial _____________ of oxygen
oxyhaemoglobin breaks down and releases _________ and_____________ _________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
haemoglobin combines with __________________ to form ______________________
In the blood capillaries near the alveolus wall, carbaminohaemoglobin breaks down to ______________and________________
[ 14 marks ] ANSWERS
7.2/2
WORKSHEET 7.2 Gaseous Exchange across the Respiratory Surfaces and Transport of Gases in Humans 1.
a.
Complete the figure below
Oxygenated blood back to the heart
Deoxygenated blood from the heart
oxygen carbon dioxide b.
Match the features of alveoli to their functions A large number of alveoli in
Gases can dissolve in the
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
the lungs Walls are made of a single layer of cells
2.
moisture and diffuse easily across the walls Can transport oxygen to and carbon dioxide away from the cells
Walls secrete a thin lining of moisture
Gases can diffuse easily across thin walls
Surrounded by a network of blood capillaries
Increase surface area for exchange of gases
Diagram below shows the exchange of gaseous in the lungs and the blood transportation to the cell. Study the figure below and complete the sequence . 7.2/3 7.2/1
In the alveolus, high partial pressure of oxygen Oxygen diffuses into the blood capillaries Oxygen combines with the haemoglobin to form oxyhaemoglobin
Oxyhaemoglobin is transported to the cells
In the cells low partial pressure of oxygen
oxyhaemoglobin breaks down and releases oxygen and haemoglobin
haemoglobin combines with carbon dioxide to form
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
Name : _____________________________
Chapter 7 Respiration
__________________________________________________________________________________________
carbaminohaemoglobin
In the blood capillaries near the alveolus wall Carbaminohaemoglobin breaks down to carbon dioxide and haemoglobin
7.2/4 7.2/1
_________________________________________________________________________________________ WAJA BIOLOGY 2009 JPN PERAK
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