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7nadin3 [17]
3 years ago
7

List 3 examples of a selectively permeable material or item. Explain where it is found or used and why a selectively permeable i

tem is needed
Biology
2 answers:
FromTheMoon [43]3 years ago
8 0
Answer;
Examples of selectively permeable materials or items are; 
1. Vacuum filter- it traps dust but allows air through
2. Coffee filter- allows water to pass through, but does not allow the coffee grounds.
3. Colander -used to strain liquid food from foods. it drains water but is not permeable to larger food particles.

Explanation;
Selective permeability means that a material or a substance allows the passage of some molecules or ions and other materials to pass through it, and inhibits the passage of others. 
For example a cell membrane is semi-permeable and thus regulates the transport of materials such that some particles pass through while others can not cross. A semi-permeable membrane allows selective movement of materials, it acts like a filter that allows particles to pass or not according to their size, solubility, electrical charge, or other chemical and physical properties. 

Rasek [7]3 years ago
5 0
I have this question for homework as well.
Colander - drains water but isn't permeable enough to lager food (used to strain liquid from food)
Vacuum filter - traps dust but allows air through (used to clean)
Coffee filter - allows air through (used to make coffee)



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