Question

A scientist 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?

Answer 1

Structure X is only found in plant cells, and structure Y is found in plant and animal cells.

In eukaryotes, the plant cell is distinguished from animal cells by the simultaneous presence of pectocellulosic wall (structure X), vacuole and plastids.