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Polymorphism in LysosomesPolymorphism, i.e. existence of a structure in more than one form, is an important feature of lysosomes. Several different forms of lysosomes have been identified within the cell as primary lysosomes, secondary lysosomes, residual bodies and autophagic vacuoles Primary lysosomes: These are newly formed organelles. They are believed to be derived from the maturing face of Golgi complex whose digestive enzymes have not yet taken part in hydrolysis.Secondary lysosomes: are formed from fusion of primary lysosomes with the vesicles containing variety of substrates known as 'phagosome'. After fusion, their membrane undergoes a change and enzymes are activated so that the substrate is digested. After activation they may continue hydl-oiysis repeatedly. The secondary lysosomes which fuse. with vesicles containing extracellular substrite brought into the cell by endocytosis are known as heterophagic lysosomes or heterophagosome whereas lysosomes fusing with vesicles containing particles isola~cdf rom cell's own cytoplasm like mitochondria, microbodies, and fragments of endoplasmic reticulum are known as autophagic vacuoles. During pathological conditions or during cell growth, autodigestion of cellular organelles is a normal event.Residual bodies: lncomplete digestion of foreign substances leads to the formation of residual bodies. Residual bodies are huge, irregular in shape and are electron dense. In some cells they remain for a long time and play a role in the aging process. In some other cells, the content of the residual bodies leave the cell by exocytosis.Lysosomes are responsible for the .intracellular digestion of a variety of substances such as food molecules, disease causing organisms, etc. This process is called heterophagy. Lysosomes are also responsible for digestion of cell's own cytoplasmic constituents. This process is called autophagy. It is important that lysosomes do not rupture and release their contents inside living cells as they would start digesting the cell and cell will die.
Q. What are varices? Why are they more common in the inferior limbs? Varix means abnormal enlargement of veins and the Varices occur when excessive pressure against the normal
I want to do assignment on kerb cycle with in text citation
Width of the Periimplant keratinized Mucosa Clinical and experimental studies have failed to support the concept of an "adequate width" of keratinized tissue adjacent to natura
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Assessment The severity of symptoms depend on degree of obstruction. In case of severe obstruction, ECG shows right ventricular or biventricular hypertrophy. Cardiac cathet
Explain the term Mutations? Mutations are changes in the genetic structure of an organism that occur at random or are the results of environmental causes. The majority of new m
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Energy and protein deficiencies Deficiencies of protein and energy are the most common nutrient deficiencies, which adversely affect production and performance of farm animals
Q. Can you explain Metallized films? In metallized films, plastic films such as those of polyester, polyamide and polypropylene are coated with aluminium to enhance the barri
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