Overview of Gaseous Exchange (Grade 11 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is breathing?
What is breathing?
Mechanical action moving air in/out lungs
Why must gas exchange surfaces be moist?
Why must gas exchange surfaces be moist?
Gases can only dissolve & move in water
What protects fish gills from damage?
What protects fish gills from damage?
Hard bony covers called opercula
What structure comes immediately after the trachea in the human respiratory pathway?
What structure comes immediately after the trachea in the human respiratory pathway?
Bronchi
What is diffusion?
What is diffusion?
Movement from high to low concentration
Why must gas exchange surfaces have thin and permeable walls?
Why must gas exchange surfaces have thin and permeable walls?
To allow faster gas passage
What gas exchange system do insects use?
What gas exchange system do insects use?
Tracheal system
What are the tiny air sacs in mammalian lungs called?
What are the tiny air sacs in mammalian lungs called?
Alveoli
Why must carbon dioxide be removed from the body?
Why must carbon dioxide be removed from the body?
It is a toxic waste product
Which organisms have a better surface area to volume ratio?
Which organisms have a better surface area to volume ratio?
Smaller organisms