Essay on Eukaryotic Cells And The Cell

1499 Words Oct 16th, 2015 null Page
Cell Biology
Beta cells in pancreatic tissues are described as eukaryotic cells and not prokaryotic, this is because the cell is larger in size and there is a true nucleus present which contains DNA. In prokaryotic cell there isn’t a nucleus and the DNA is free within the cytoplasm. Also Beta cells have many organelles and there is mitochondria present, which in a prokaryotic cell there are fewer organelles and there aren’t any mitochondria present.
Beta cells in the pancreatic tissue release insulin when blood sugars are high, in order for insulin to be released it needs be produced and the insulin is created by a process called protein synthesis. When a beta cell produces, processes and exports insulin it uses different structures of the cell. The cell uses the following structures in the process of producing, processing and exporting the insulin: Nucleus, RER, mitochondria, Golgi body and the cell surface membrane.
The first stage of this process starts in the nucleus, and is called transcription. ; This is where mRNA is produced, which is a copy of the Deoxyribonucleic acid (DNA) in the nucleus. DNA is made up of four bases which are: Cytosine, Guarine, Adenine and Thymine. DNA forms units called base pairs; this is done by the four bases pairing up, Adenine pairs with Thymine and Cytosine pairs with Guarine. The base pairs then connect to a sugar molecule and a phosphate molecule. When the three have connected it is then called a Nucleotide. DNA contains a double…

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