Question

a scientist is examining the function of macromolecules in a cell. she notices that movement of large molecules into and out of the cell is disrupted when she damages one specific type of macromolecule. which macromolecule has she most likely damaged? a carbohydrate a steroid a nucleic acid a protein

Explanation:

Proteins play crucial roles in transporting large molecules across the cell - membrane. Carbohydrates are mainly for energy and cell - recognition, steroids are a type of lipid with various regulatory functions, and nucleic acids store and transmit genetic information.

Answer:

D. a protein