Podcast
Questions and Answers
What is the term used to describe the environment around the cells of multicellular organisms?
What is the term used to describe the environment around the cells of multicellular organisms?
Tissue fluid
Why is diffusion alone not sufficient to supply or remove materials to cells that are far from exchange surfaces?
Why is diffusion alone not sufficient to supply or remove materials to cells that are far from exchange surfaces?
Cells are too far for diffusion to be effective in supplying or removing materials to and from their tissue fluid.
How does the size and metabolic rate of an organism affect the amount of materials exchanged?
How does the size and metabolic rate of an organism affect the amount of materials exchanged?
Organisms with high metabolic rates exchange more materials and require a larger surface area to volume ratio.
What is responsible for maintaining the diffusion gradients that bring materials to and from the cell-surface membranes?
What is responsible for maintaining the diffusion gradients that bring materials to and from the cell-surface membranes?
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How do organisms adapt their exchange surfaces and transport systems based on their needs?
How do organisms adapt their exchange surfaces and transport systems based on their needs?
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Explain the importance of the exchange surfaces in the context of material transfer between environments.
Explain the importance of the exchange surfaces in the context of material transfer between environments.
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What happens to waste products once they are absorbed into the organism?
What happens to waste products once they are absorbed into the organism?
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Why do organisms with a high metabolic rate require a larger surface area to volume ratio?
Why do organisms with a high metabolic rate require a larger surface area to volume ratio?
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How do materials reach the tissue fluid surrounding cells in multicellular organisms?
How do materials reach the tissue fluid surrounding cells in multicellular organisms?
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What role does the mass transport system play in the context of material exchange between environments?
What role does the mass transport system play in the context of material exchange between environments?
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