Ascientist is comparing the outer structure of an onion cell, structure x, to the outer structure of a human skin cell, structure y. which generalization is true about the types of structures being examined?
a) structure x is not living, and structure y is living
b) structure x can be found in some human cells, and structure y can be found in some plant cells.
c) structure x is only found in plant cells, and structure y is found in plant and animal cells.
d) structure x is semipermeable, and structure y is selectively permeable.
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