BLG 143 Chapter Notes - Chapter 1: Antonie Van Leeuwenhoek, Robert Hooke, Cell Membrane
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An organism is a living entity made up of 1+ cells. Obtain and use energy to stay alive and reproduce: cells. Made up of cells: cell membrane regulates the passage of materials between exterior and interior spaces, information. A theory is a proposed explanation for broad patterns of phenomena/observations. Used microscope (30x) to examine the structure of a cork. Observed small things invisible to human eyes. Used microscope (300x) to examine pond water, human blood cells and sperm cells. A cell is a highly organized compartment bound by a plasma membrane (thin, flexible structure) containing concentrated chemicals in aqueous solution. A hypothesis is a proposed answer that creates a testable prediction for more focused questions. A prediction is an observable outcome of a condition something that can be measured and correct if there is a valid hypothesis. In an experiment, there must be a constant. Charles darwin and alfred russel wallace (late 1800s)
