LSU Biology 1002—Hrincevich
Questions and Answers.
Which of the following represents an evolutionary adaptation that terrestrial animals have to
improve the efficiency of their respiratory systems? - Answer Development of internal
respiratory surfaces with large amounts of surface area
Which part of the respiratory system is responsible for producing the voice? - Answer Larynx
Compare the lungs to other respiratory structures such as gills and skin. What is the major
advantage of the lungs? - Answer The lungs have more surface area, with a larger respiratory
membrane for gas exchange.
Which of the following features that facilitate diffusion of respiratory gases is/are NOT shared by
all animals with some type of respiratory system? - Answer The respiratory system is always
cold.
Identify the three ways that blood can transport carbon dioxide and tell what percentage of
blood each transports. - Answer Plasma (10%)
Hemoglobin (20%)
Bicarbonate ions(water)-(70%)
Which of the following stages in the process of respiratory gas exchange occurs by diffusion? -
Answer The movement of respiratory gases across the respiratory surfaces of the lungs and
the movement of respiratory gases between the tissues of the body and the circulatory system
If humans didn't have lungs, but instead their skin were thin and moist for gas exchange, they
would struggle to meet the oxygen demand of tissues. Why? - Answer The skin would not
provide a great enough surface area for gas exchange.
The ________ is a structure shared by the digestive and respiratory system? - Answer
Pharynx (sits just above the epiglottis, and both food and air can be conducted by it)
Fish have -----, birds have ---- lungs, and mammals have ---- lungs used for gas exchange. -
Answer gills, fixed, flexible
The major criterion that determines the rate of breathing is... - Answer Blood carbon dioxide
level
Questions and Answers.
Which of the following represents an evolutionary adaptation that terrestrial animals have to
improve the efficiency of their respiratory systems? - Answer Development of internal
respiratory surfaces with large amounts of surface area
Which part of the respiratory system is responsible for producing the voice? - Answer Larynx
Compare the lungs to other respiratory structures such as gills and skin. What is the major
advantage of the lungs? - Answer The lungs have more surface area, with a larger respiratory
membrane for gas exchange.
Which of the following features that facilitate diffusion of respiratory gases is/are NOT shared by
all animals with some type of respiratory system? - Answer The respiratory system is always
cold.
Identify the three ways that blood can transport carbon dioxide and tell what percentage of
blood each transports. - Answer Plasma (10%)
Hemoglobin (20%)
Bicarbonate ions(water)-(70%)
Which of the following stages in the process of respiratory gas exchange occurs by diffusion? -
Answer The movement of respiratory gases across the respiratory surfaces of the lungs and
the movement of respiratory gases between the tissues of the body and the circulatory system
If humans didn't have lungs, but instead their skin were thin and moist for gas exchange, they
would struggle to meet the oxygen demand of tissues. Why? - Answer The skin would not
provide a great enough surface area for gas exchange.
The ________ is a structure shared by the digestive and respiratory system? - Answer
Pharynx (sits just above the epiglottis, and both food and air can be conducted by it)
Fish have -----, birds have ---- lungs, and mammals have ---- lungs used for gas exchange. -
Answer gills, fixed, flexible
The major criterion that determines the rate of breathing is... - Answer Blood carbon dioxide
level
