Podcast
Questions and Answers
Which structure is typically the gas exchange membrane in small unicellular organisms?
Which structure is typically the gas exchange membrane in small unicellular organisms?
- Gills
- Cell membrane (correct)
- Pulmonary alveoli
- Spongy mesophylls
What is the primary purpose of gas exchange in living organisms?
What is the primary purpose of gas exchange in living organisms?
- To produce energy for cellular reactions
- To regulate body temperature
- To transport nutrients across the cell membrane
- To maintain an efficient system for gas exchange between the cell(s) and the external environment (correct)
What specialized structures provide the large area needed for effective gas exchange in most larger organisms?
What specialized structures provide the large area needed for effective gas exchange in most larger organisms?
- Cuticle
- Pulmonary alveoli
- Gills (correct)
- Cell membrane
Which type of organisms are able to perform sufficient gas exchange across the skin or cuticle that surrounds their bodies?
Which type of organisms are able to perform sufficient gas exchange across the skin or cuticle that surrounds their bodies?
Why do gases need to move passively by diffusion across a surface in gas exchange?
Why do gases need to move passively by diffusion across a surface in gas exchange?
Gas exchange is the physical process by which gases move passively by diffusion across a ______
Gas exchange is the physical process by which gases move passively by diffusion across a ______
In most living things, an efficient system for gas exchange between the interior of the cell(s) and the external environment is ______
In most living things, an efficient system for gas exchange between the interior of the cell(s) and the external environment is ______
Some small multicellular organisms, such as flatworms, are also able to perform sufficient gas exchange across the ______ that surrounds their bodies
Some small multicellular organisms, such as flatworms, are also able to perform sufficient gas exchange across the ______ that surrounds their bodies
In most larger organisms, specialized structures with convoluted surfaces such as gills, pulmonary alveoli, and spongy mesophylls provide the large area needed for effective gas ______
In most larger organisms, specialized structures with convoluted surfaces such as gills, pulmonary alveoli, and spongy mesophylls provide the large area needed for effective gas ______
These convoluted surfaces may sometimes be internalized into the body of the ______
These convoluted surfaces may sometimes be internalized into the body of the ______
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