SAS 2: Levels of Organization and the Complexity of Organism PDF
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Summary
The document discusses the levels of organization and complexity of organisms. It highlights the cell as the basic unit of life, and categorizes organisms into prokaryotes and eukaryotes, explaining their differences. The summary also notes the fundamental similarities in DNA content. Lastly, the document lists various cellular components and their functions.
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The Animal Cell SAS 2: Levels of Organization and the Complexity of Organism ell C → The CELL is the basic unit of life. → It forms the basic units...
The Animal Cell SAS 2: Levels of Organization and the Complexity of Organism ell C → The CELL is the basic unit of life. → It forms the basic units of all living organisms, and composes all tissues and organs, each performing specialized functions in organized partnership. → Alllivingorganismsarecomposedofcells,andthereare also organisms that are made of only a single cell. In the case of single-celled (unicellular)organisms,allfunctionsof their life are performed within the confines of one microscopic package. heyarealsothesimplestformoflifeandareclassifiedinto T 2 types: . Nucleoplasm A rokaryote(“pro”=before) P Fluid inside the nucleus that suspends the chromosomes. → A unicellular organism that does not have a distinct . Nucleolus B nucleus with a membrane and does not have other Specialized parts of chromosomes with multiple copies. specialized organelles (ex. Bacteria and archaebacteria). → The first living organism on earth could possibly bea . Nucleus C prokaryote due to its simplicity Most prominent organelle which holds genetic information. . Lysosome D ukaryote (“eu” = new) E Organelle which breaks down foreign material. → Anorganismconsistingofacell/swhichhasanucleus enclosed within membranes, and also contains . Smooth ER E membrane-bound organelles. Canbeeitherunicellular(ex. Synthesizes lipids and detoxifies cells of harmful Protozoans) or multicellular (all other life-forms, including substances. man). . Golgi Complex F Storage, modification and packaging of products produced othprokaryotesandeukaryotescontainDNA,usethesame B by the RER. genetic code, and synthesize proteins. These fundamental . Rough ER G similarities imply that they have common ancestry. Where most protein synthesis occurs. . Ribosomes H Responsible for protein synthesis. I. Cytoplasm Fluid which holds all the contents of a cell. . Plasma membrane J A selectively permeable membrane enclosing the cell. . Mitochondria K Produces ATP for energy in the cell.
