Question

Proteins that lack a sorting signal remain as permanent residents of which part of a eucaryotic cell?

A. The nucleus
B. The cytosol
C. The endoplasmic reticulum D. The Golgi apparatus
E. A lysosome

Answer 1

Proteins that lack a sorting signal remain in the cytosol of a eukaryotic cell.

Step-by-step explanation:

Proteins that lack a sorting signal remain as permanent residents of the cytosol of a eukaryotic cell.

When proteins are synthesized and do not contain a sorting signal, they are not directed to any specific organelle or compartment within the cell. As a result, they remain in the cytosol, which is the fluid-filled space between the cell membrane and the organelles.

For example, proteins that are produced in the cytoplasm for functions within the cytoplasm, such as enzymes involved in cellular metabolism, do not require a sorting signal and therefore permanently stay in the cytosol.