Ribosomes In Eukaryotic Cells

Decent Essays

The nucleus houses most of the genes in a eukaryotic cell. The genetic instructions are housed within a cell, and the instructions are carried out by the ribosomes. The nucleus directs protein synthesis by synthesizing messenger RNA according to instructions provided by the DNA. The mRNA is then transported to the cytoplasm via nuclear pores.

The main parts of the nucleus include the nuclear envelope, which encloses the nucleus and separates it from the cytoplasm, which has an outer and an inner membrane. There is a complex of pores that helps regulate entry and exit into the nucleus. The nuclear side of the envelope is lined by the nuclear lamina, which helps maintain the structure of the nucleus. The DNA inside a nucleus is organized into units called chromosomes, which is made up of chromatin, a complex of proteins and DNA. The structures in a …show more content…

They carry out protein synthesis. There are two locales- free ribosomes in cytosol and bound ones to the endoplasmic reticulum or nuclear envelope. Most proteins are made in free ribosomes.

The central dogma of biology is how proteins are made- DNA transcribes RNA, then RNA forms proteins by translation, or protein synthesis. DNA->RNA->Proteins.

Free ribosomes are found in the cytosol, while bound ribosomes are found attached to the side of the endoplasmic reticulum or nuclear envelope.

The information in a gene,found on a chromosome, in the nucleus is used to synthesize an mRNA that is transported through a nuclear pore to the cytoplasm. There it is translated into a protein, which is transported back through a nuclear pore into the nucleus, where it joins other proteins and DNA, forming chromatin.

The transport vesicles move membranes and substances that they enclose between other components of the endomembrane system. They are sacs made of membrane that helps transport

Get Access