The endosymbiosis theory explains the origins of organelles such as mitochondria and chloroplasts in eukaryotic cells. The theory proposes that chloroplasts and mitochondria evolved from certain types of bacteria that eukaryotic cells engulfed through endophagocytosis.any instances of endosymbiosis are obligate; that is, either the endosymbiont or the host cannot survive without the other, such as the gutless marine worms of the genus Riftia, which get nutrition from their endosymbiotic bacteria.
Rational Emotive & Cognitive-Behavior Therapy. REBT is the pioneering form of cognitive behavior therapy developed by Dr. Albert Ellis in 1955. REBT is an action-oriented approach to managing cognitive, emotional, and behavioral disturbances.According to REBT, it is largely our thinking about events that leads to emotional and behavioral upset.EBT is an action-oriented approach to managing cognitive, emotional, and behavioral disturbances. According to REBT, it is largely our thinking about events that leads to emotional and behavioral upset.
Resource Mobilization Theory (RMT) attempts to explain social movements by viewing individuals as rational actors that are engaged in instrumental actions that use formal organizations to secure resources and foster mobilization (McCarthy and Zald, 1987).RMT can be broken down into two parts.MT is a theory to explain the formation and activities of social movements, while NSM simply tries to explain the motivation behind participants in a select group of social movements. NSM Theory is not adequate as an explanation of social movements. Its applicability is to narrow.