Inside of Cells Essay

1012 Words5 Pages
Inside Cells – Prokaryotic * Storage Granules: Nutrients and reserves may be stored in the cytoplasm. * Ribosomes: Ribosomes give the cytoplasm of bacteria a granular appearance in electron micrographs. Though smaller than the ribosomes in eukaryotic cells, these inclusions have a similar function in translating the genetic message in messenger RNA into the production of peptide sequences (proteins). * Endospore: Some bacteria can survive hostile environments, often for long time periods, by bundling their genetic material in a tough internal structure. Endospores can withstand heat, cold, radiation, and lack of nutrition. * Cytoplasm: The cytoplasm is mostly water, but within it are the bacterial inclusions - nucleoid, plasmids, ribosomes and storage granules - as well as the components necessary for bacterial metabolism. * Plasmid: Plasmids are small circular DNA fragments found in the cytoplasm that contain code responsible for antibiotic resistance and other characteristics. * Gynophore: The gynophore, sometimes referred to as the bacterial chromosome, is a long double strand of DNA, usually in one large circle. It includes most of the genetic material of the organism. * Nucleoid: DNA in the bacterial cell is generally confined to this central region. It is visibly distinct from the rest of the cell interior. Eukaryotic- * Nucleus: It is enclosed in a double membrane and communicates with the surrounding cytosol via numerous nuclear pores (holes in the membrane). Within the nucleus is the DNA responsible for providing the cell with its unique characteristics. When a cell is dividing, the nuclear chromatin (DNA and surrounding protein) condenses into chromosomes. * Nucleolus: The prominent structure in the nucleus is the nucleolus. The nucleolus produces ribosomes, which are critical in protein synthesis. * Cytosol:

More about Inside of Cells Essay

Open Document