HELP The indicated protein is part of a cell membrane. What is the most likely purpose
of this protein?

It attracts unbalanced electrical charges in the cell’s environment.
It allows passage of particles into and out of the cell.
It releases stored chemical energy in membrane carbohydrates.
It manufactures phospholipids to repair membrane damage.

It allows passage of particles into and out of the cell

Explanation:

Cell membrane has proteins that help particles go in out of the cell. This type of passive transport is called facilitated diffusion.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.