Question

the function of the nucleolus is
protein synthesis.
photosynthesis.
transport of material into and out of the nucleus.
assembly of components of ribosomes.
assembly of dna.

Explanation:

• Protein synthesis occurs at ribosomes, not the nucleolus.
• Photosynthesis is carried out by chloroplasts in plants/algae.
• Nuclear pore complexes handle transport into/out of the nucleus.
• The nucleolus is the primary site for assembling ribosomal subunits (ribosome components) from rRNA and proteins.
• DNA assembly (chromatin organization) is not the nucleolus's function.

Answer:

assembly of components of ribosomes.