Question

select the part whose main job is to give the cell its fixed shape.
cell wall chromosomes
rough endoplasmic
reticulum golgi

Explanation:

To determine the cell part that gives a fixed shape, we analyze each option:

• Cell wall: In plant cells (and some prokaryotes/fungi), the cell wall provides structural support and a fixed shape.
• Chromosomes: These carry genetic information, not shape - related functions.
• Rough endoplasmic reticulum (RER): Involved in protein synthesis and transport, not shape.
• Golgi (apparatus): Modifies, sorts, and packages proteins/lipids, not shape - determining.

So the cell wall is the correct choice.

Answer:

A. cell wall