Question

most structures in a cell are membrane-bound, but some arennot. which lacking a membrane is present in plant cells and not in animal cells

Answer 1

In plant cells, the structure that lacks a membrane and is not found in animal cells is the **cell wall**. The cell wall is composed primarily of cellulose and provides structural support and protection to the plant cell. In contrast, animal cells do not have a cell wall; they are surrounded only by a flexible plasma membrane.