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Unformatted text preview: Regulates the passage of materials between cell and environment i. Membrane a. Specific functions b. Unicellular vs. Multicellular c. Cells- basic unit of life A. Increase in number of cells a. Increase in size of cells b. All changes in life a. Development c. Growth & Development B. Sum of all chemical reaction plus Energy transformation that occur in an organism a. Balanced internal environment i. Blood glucose high a) Stored as glycogen in liver and muscle cells b) After meal 1) Blood glucose low a) Converts glycogen to glucose b) No food 2) Example: Glucose = Energy source ii. Regulated in order to maintain Homeostasis b. Use Energy c. Synthesis -->Simple substance--> Complex substance-->growth + storage of Energy 1) Anabolism i. Breakdown Complex substance-->Simple substance-->energy starts recycling 1) Catabolism ii. Types of Metabolic reaction (pg. 155) d. Metabolism C. Changes in internal or external environment i. Physical or Chemical changes a. Changes in light i. Changes in temperature, pressure, sound ii. Changes in chemical composition iii. Example b. All living organisms are responsible to environmental Stimuli D. Movement - response to stimulus E. genetic material duplicates before the cell splits 1) Each new cell is identical to the parent cell unless mutation 2) Amoeba(splits in half) i. Asexual a. Most plants and animals i. Fertilization 1) Genetic variation 2) Fusion of egg and sperm ii. Sexual b. All living organisms are able to reproduce F. Inherited characteristics that enhance an organisms ability to survive in a particular environment. a. Evolutionary adaptation to change G. Characteristics of Life Lecture 1 Wednesday, September 01, 2010 12:12 AM Biology Page 1 Individuals do not evolve, we develop. Over generations, populations evolve and adapt to environment. b. Atom--> smallest unit of chemical unit a. Molecules b. Chemical Level A. Cell B. Tissues a. Organs b. Tissues + Organs i. Organ systems c. Multicellular Organisms C. Individuals of species living in the same place at the same time a. Population D. Populations of different organisms living in the same place at the same time a. Community E. Community of non-living environment (soil, air, wind). a. Ecosystem F. Levels of Biological Organization Cell membrane a. Holds living contents together separate from each other i. Plasma membrane b. Enclosed in a membrane A. Materials must go in and out through out the cell B. Source of energy transform a. Metabolism C. Nucleic Acids 1) DNA 2) Example i. Control all of its activities a. Information storage and Retrieval system D. Reproduce E. Requirements of Cells Meter(m) i. Centimeter (1m/100) (cm) ii. Millimeter(1m/1000)(mm) iii. Micrometer(1m/10^6)(micron) iv....
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- Fall '08