The+Scope+of+Biology

The Scope of Biology •Ecosystem- consists of biotic (living) and abiotic (nonliving) organisms- highest level of structure. Example: rainforest •Community- all populations of organisms living together and potentially interacting in a particular area. Example- all organisms in a rainforest •Population- an interacting group of one specific species. Example- group of flying squirrels or ants •Organism- an individual living thing. Example- a single flying squirrel or ant •Organ System- group of organs that perform a general function. Example- circulatory system. •Organ- a collection of tissues which performs certain specific functions •Tissue- materials which organs are composed of •Cells- Smallest living particles which make up tissues, and perform tasks that are necessary for life •DNA- Contains the genetic blueprints for the human body. Composed of four nucleotides: adenine, guanine, cytosine, and thymene, and sugar phosphate backbones.