The central dogma of molecular biology states that dna is into mrna, which is then translated into polypeptides.
eukaryotic ribosomes exist freely floating in the and membrane-bound.
in peptide synthesis, after an amino acid has been added to the polypeptide chain, the empty exits the ribosome.
respond to the following based on your reading.

where is the ribosome located in the cell? what is the essential role of the ribosome in gene expression?
in which crucial step of gene expression does the ribosome play a major role: transcription or translation?
how does the ribosome differ in eukaryotes and prokaryotes?
why is transfer rna, or trna, necessary for protein synthesis?
what is the role of ribosomal rna in the ribosome?
what happens if there are no ribosomes present in the cell, or if the ribosomes do not function properly?
: :
1.transcribed
2.cytoplasm
3.trna
4. ribosomes are located in the cytoplasm, the fluid material that comprises the cell. in prokaryotes, ribosomes freely float in the cytoplasm. in eukaryotes, ribosomes can be both freely floating and membrane-bound. the ribosome's role in gene expression is to synthesize proteins based on the instructions provided by mrna. the mrna strand is made from the cell's dna and tells the ribosome how to construct the cell's necessary proteins.
5.the ribosome is essential for protein synthesis, so it is part of translation and not transcription. the ribosome reads instructions from mrna and "translates" them into proteins.
6.prokaryotes and eukaryotes have some major structural differences, so the details of protein synthesis differ between these two types of organisms as well. prokaryotic organisms such as bacteria do not have a cell nucleus, so the cell's dna floats freely in the cell. in eukaryotic organisms such as humans, the cell's dna is located in the nucleus, while the ribosome is located in the cytoplasm.
eukaryotic ribosomes are also larger and more complex than prokaryotic ribosomes.
7.transfer rna, or trna, provides a physical link between the codons of the mrna and the amino acids to be added to the polypeptide chain. specific trna molecules are bound to specific amino acids, and trna that is complementary to the mrna codon enters the ribosome and transfers its amino acid to the growing polypeptide chain.
8.ribosomal rna, or rrna, is an important component of the ribosome. both eukaryotic and prokaryotic ribosomes contain rrna. rrna and proteins together carry out the functions of the ribosome.
9.if there are no ribosomes present in the cell, proteins cannot be made. without protein synthesis, cells cannot accomplish their necessary functions, and the organism will die.