Nucleus Essay

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The nucleus is the largest of organelles and can be found within the nuclear envelope. The nucleus is responsible for the storage of the genetic entropy required for growth, reproduction and metabolism. Not only the cell that it controls, but also the whole organism. It controls the replication and transfer of hereditary molecules deoxyribonucleic acid and ribonucleic acid (DNA and RNA) between the parent cell and child cell. The nucleus ensures identical distribution and exact duplication of the genetic contents during cell reproduction. The nucleus sustains and controls the cell growth by arranging the synthesis of structural proteins in the cell.
The nucleus is the place for DNA transcription in which messenger RNA (mRNA) that synthesizes protein, is produced. The nucleus contains numerous types of proteins which can either directly control transcription or are indirectly involved in regulating the process. The process of energy and nutrient metabolism in the cell is regulated by the nucleus. It directs the synthesis and functioning of enzymes; a type of protein.
The selective diffusion of cell's regulatory and energy molecules through the pores in the nuclear membrane are presided over by the nucleus. Nucleus is responsible for the secretion of ribosomes. The ribosomes, in turn are responsible for synthesizing all types of proteins.
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Some ribosomes are found scattered in the cytoplasm (these can be referred to as free ribosomes), while others are attached to the endoplasmic reticulum (also known as bound ribosomes). The surface of the endoplasmic reticulum when bound with ribosomes is called rough endoplasmic reticulum (RER). Both the free and bound ribosomes have similar structure and are responsible for the production of proteins. Ribosomes are responsible for assembling amino acids to form specific proteins, which in turn are essential for carrying out the cell's

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