Question

which of the following structures found in the cell membrane freely moves around and is responsible for allowing materials and information to pass into the cell?
○ transmembrane proteins
○ carbohydrate chains
○ glycolipids
○ cholesterol

Explanation:

Transmembrane proteins span the cell - membrane and form channels or carriers that allow materials and information to pass into the cell. Carbohydrate chains are mainly for cell - cell recognition. Glycolipids also play roles in cell recognition and protection. Cholesterol helps maintain membrane fluidity but is not directly responsible for transporting materials and information into the cell.

Answer:

Transmembrane proteins