NATS 1675 Midterm: Class Note for Test 1.docx
11 Mar 2013
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Box type shape surrounding by cell membranes. Fundamental structural unit or building block of all organisms. An organism is defined as any living things. Cells are composed of protoplasm contained in a membrane; (protos = first; plasma = something formed or molded) Protoplasm is the essential material of all cells in living organisms. Life depends on, and arises out of, the continuous chemical activity that occurs in protoplasm. A colloidal system is a permanent suspension of finely divided particles including large molecules of carbohydrates, lipids, proteins and nucleic acids (rna & dna). All organisms are divided in five groups or kingdoms: monera: bacteria & blue-green algae, protists: single celled organisms previously referred to as protozoans. (plant-like/animal like, fungi: fungus, plantae: plants, anamalia: animals. Bacteria has no true nucleus, but they do have nucleus. Bacteria has no chlorophyll, but blue-green algae does have. Chlorophyll is a green pigment involved in photosynthesis.
