Lecture Notes for BIOL 1105 - Principles of Biology with Simmons at Virginia Tech (VT)

Notes Information

Material Type:Note
Class:BIOL 1105 - Principles of Biology
Subject:Biological Sciences
University:Virginia Polytechnic Institute And State University
Term:Fall 2008
  • Level of Living
  • Particularly
  • Basic Research
  • Simple Organisms
  • Reductionism
  • Living Will
  • Observation
  • Biological Community
  • Individuals
  • In/on/at a Place
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The Science of Biology- Chapter 1 Notes Chapter 1.1 08/24/08 A. Cellular Level of Life: Cellular Level: a. Atoms- consist of a nucleus of positively charged protons and neutrally charged neutrons. Negatively charged electronsare arranged outside the nucleus. [All matter is composed of extremely small particles aka atoms.] b. Molecules- groups of two or more atoms held together by chemical bonds. c. Macromolecule- large organic molecules that may consist of hundreds or thousands of atoms. d. Organelle-complex biological molecules that are assembled into tiny structures within membrane- bounded units called cells. e. Cell- basic unit of life. Example: Bacteria are single cells; animals and plants are multicellular. Organismal Level: f. Tissue- groups of similar cells that act as a functional unit g. Organ- tissues are grouped into organs. Body structures composed of several different tissues that act as a structural and functional unit. h. Organ system- organs are grouped into organ systems. Example: The nerv...

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