GENERAL HISTOLOGY

Detailed explanation-1: -As mentioned above, ribosomes are the molecular machines responsible for protein synthesis. In eukaryotes, ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs (mRNAs). More items

Detailed explanation-2: -The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function.

Detailed explanation-3: -RNA has three main roles in the cell: It carries the instructions from the DNA in the nucleus to the ribosomes where proteins are made in the cytoplasm of the cell. RNA picks up specific amino acids from the cytoplasm of the cell and delivers them to the ribosomes where protein synthesis takes place.

Detailed explanation-4: -At the nucleolus, a long ribosomal RNA (rRNA) precursor molecule is transcribed from DNA, processed into three mature RNAs, and packaged together with specific proteins to make the large and small ribosomal subunits.

Detailed explanation-5: -The nucleolus is a spherical structure found in the cell’s nucleus whose primary function is to produce and assemble the cell’s ribosomes.