Question

question
what is true about selective permeation?
select the correct answer below:
only molecules or ions of a certain size, shape, polarity, charge, and so forth, are capable of passing through the material.
all molecules of any size, shape, polarity, charge, and so forth, are capable of passing through the material.
all ions of any size, shape, polarity, charge, and so forth, are capable of passing through the material.
none of the above

Explanation:

Selective permeation means that a membrane (or material) allows only specific molecules or ions to pass through. This selectivity is based on factors like size, shape, polarity, and charge. The first option correctly describes this concept. The second and third options mention "all molecules" or "all ions" which is incorrect as it's not about all but specific ones. The fourth option is wrong since the first option is correct.

Answer:

Only molecules or ions of a certain size, shape, polarity, charge, and so forth, are capable of passing through the material.