Answer:
sensors, control center, communication system, target
Explanation:
Membrane proteins can function as enzymes to speed up chemical reactions, act as receptors for specific molecules, or transport materials across the cell membrane. Carbohydrates, or sugars, are sometimes found attached to proteins or lipids on the outside of a cell membrane.
Heavy sedimentary items such as as rocks for example <span />
Are their answer choices specifying because there are many answers to this question
