Question

large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
lipids
glycogen
proteins
cellulose
nucleic acids

Explanation:

Ribosomes are the cellular structures responsible for protein synthesis (translation). Lipids are synthesized in structures like the smooth endoplasmic reticulum, glycogen (a carbohydrate) and cellulose (a polysaccharide) are synthesized by enzymes in the cytoplasm or Golgi, and nucleic acids are synthesized by processes like replication and transcription (not primarily by ribosomes). So cells specialized in producing proteins will have many ribosomes.

Answer:

Proteins (the option corresponding to "Proteins" among the choices)