Cell Organelles

Cell Organelles

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Golgi Complex and Protein Storage

It is the cell organelle that stores part of the proteins produced in a cell, among other functions. These proteins can then be used later by the body.

They are organelles that contain substances necessary for cellular digestion. When the cell encompasses a food particle that needs to be digested, the lysosomes go to it and release the digestive juice they contain.

Imagine a white blood cell in our body before an invasive bacteria that it will destroy. The bacterium is too large to simply cross the blood cell's plasma membrane. In this case, the plasma membrane emits expansions that surround the bacteria. These expansions eventually merge and the bacteria is finally enveloped and carried into the cell.

This phenomenon of particle enclosure is called phagocytosis. If the cell encompasses a liquid particle, the phenomenon is called pinocytosis and in this case the typical expansions of phagocytosis are not formed.

Learn more about Phagocytosis and Pinocytosis

Centrioles are cylindrical structures formed by microtubules (microscopic tubes). These organelles participate in cell division, "guiding" the displacement of chromosomes during this process. Usually each cell has a pair of perpendicularly arranged centrioles.

The nucleus of the cell

Scottish botanist Robert Brown (1773 - 1858) found that the cells had a generally rounded corpuscle, which he called the nucleus. nux: 'seed'). He imagined that the nucleus was a kind of "seed" of the cell.

The nucleus is the largest structure of the animal cell and houses the chromosomes. Each chromosome contains several genes, the genetic material that drives cellular activities. Therefore, we say that the nucleus is the bearer of hereditary factors (transmitted from parent to child) and the regulator of the metabolic activities of the cell. It is the "vital center" of the cell.

Nucler wrap - It is the membrane that surrounds the nucleus content, it is endowed with numerous pores, which allow the exchange of substances between the nucleus and the cytoplasm. In general, the more intense cellular activity, the more pores in the library.

Nucleoplasma - It is the gelatinous material that fills the inner space of the nucleus.

Nucleolus - Round, non-membranous corpuscle that is immersed in the karyolymph. Each filament contains numerous genes. In a dividing cell, the long thin strands of chromatin become shorter and thicker: they are now called chromosomes.

Chromosomes are responsible for the transmission of hereditary characters.