Which molecule listed in the chart is a protein

Molecule 4

Molecule 1 is a carbohydrate (sugar).

Function: short term energy storage and makes up cell wallsMonomers: monosaccharidesFound in: fruits, vegetables, bread, pasta

Molecule 2 is a lipid (fat).

Function: long term energy storage, insulation, and makes up cell membranesMonomers: three fatty acids and one glycerolFound in: oils, fats, butter

Molecule 3 is a nucleic acid.

Function: store genetic information used to provide directions for protein synthesisMonomers: nucleotidesFound in: all foods

Molecule 4 is a protein.

Function: speeds up chemical reactions, movement, transport, and defends against infectionsMonomers: amino acidsFound in: meat, milk, cheese, eggs, plants