Question

what is digestive bag describe its structure and function

Answer 1

Dear student. Lysosomes are called digestive bags and also the suicide bags of the cell. They act like the stomach of the cell. They digest the cell debris, engulfed viruses and bacteria so they are called digestive bags but sometimes they digest the whole cell so they are called suicide bags. Function: Lysosomes are bags containing digestive enzymes involved in digestion of intra­cellular and extracellular particles. The primary lysosomes secrete hydrolases outside by exocytosis, resulting in degradation of the extracellu­lar material (extracellular digestion). Saprophytic fungi utilize extracellular digestion for nutrition. Structure: Lysosomes are globular or granu­lar in appearance of 0.2-0.5µm size without any characteristic shape or structure. These are bounded by a single lipoprotein membrane con­taining enzymes in crystalline form. The enzymes present are phosphatase, nuclease, lipase, protease, glycosidase, sulfates, amylase. The membrane is impermeable to substrates of the enzymes contained in the lysosome. Certain substances, called labializes, cause instability of the lysosomal membrane, leading to release of enzymes from the lysosome. Other substances, called stabilizers, have a stabilizing action on the membrane.