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. lipid
○ a. nucleic acid
○ a. protein

Explanation:

To determine the damaged macromolecule, we analyze each option:

• Carbohydrates: Mainly for energy or structure, not direct transport.
• Lipids: Form cell membranes but not transport proteins.
• Nucleic acids: For genetic info, not transport.
• Proteins: Include transport proteins (e.g., channel/carrier) for large molecules. Damaging a protein (transport protein) would disrupt large molecule movement.

Answer:

D. a protein