Lysosomes are organelles that contain hydrolytic enzymes that are used for intracellular digestion.
2.
This kind of intracellular digestion occurs in many unicellular protozoans, in Pycnogonida, in some molluscs, Cnidaria and Porifera.
3.
In 1893 he was appointed lecturer of zoology at the University of Lyon, where he continued studies of intracellular digestion.
4.
Intracellular digestion can also refer to the process in which animals that " lack " a digestive tract bring food items into the cell for the purposes of digestion for nutritional needs.
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Then the following speaker de Duve correctly identified that these organelles were lysosomes, and named them autophagic vacuoles, and he introduced the term " autophagy " for the process of such intracellular digestion.
6.
Based on de Duve's description that only when considered as part of a system involved directly or indirectly in intracellular digestion does the term lysosome describe a physiological unit , some botanists strongly argued that these vacuoles are lysosomes.
7.
Lysosomes carry out intracellular digestion, in a process called phagocytosis ( from the Greek phagein, to eat and kytos, vessel, referring here to the cell ), by fusing with a vacuole and releasing their enzymes into the vacuole.
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