BIO 240 1st Edition Lecture 1 Outline of Last Lecture I. None (No lecture on 1/12, just an introduction to the class)Outline of Current Lecture II. Biology Review A. Levels of organizationB. LifeIII. The CellA.Basic Cell Structurei.Plasma membraneCurrent LectureII. Biology Review A. Levels of organizationa. Chemical The lowest level of organization. Includes atoms and molecules that are essential for life. b. Cellular components Mostly cell organelles, or things you find inside the cell. c. Cell The basic structural and functional unit of life. d. Tissue Groups of similar cell types working for a common functioni. Epithelialii. Connectiveiii. Nervousiv. Musclee. Organs Two or more tissue types working for a common function.f. Organ system The highest level of organization; two or more organs working together for a common function. B. Lifea. At the cellular level, life must posses the following characteristics to be considered alive:i. Metabolism The chemical processes of an organismii. Responsiveness Ability to respond to stimuliiii. Movement Movement only has to me minimal; just enough to achieve responsivenessiv. Growth Becoming larger over timeThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.v. Differentiation Cells specializing or changing into another typevi. Reproduction Can be asexual or sexual; but must be capable of producing more.III. The CellA.Basic Cell Structurei.Plasma membrane1.General characteristics:a.Separates the inside of the cell from the outside of the cell.b.Controls what goes into the cell.c.Is extremely thin (~ 5-10 nm)2.Fluid mosaic model (developed by Singer and Nicholson)a.Phospholipid heads are hydrophilic b.Lipid tails are hydrophobicc.Integral Plasma Membrane Proteins (IPMPs)i.Embedded across the membrane – can form channels.d.Peripheral Plasma Membrane Proteins (PMPs)i.Float from the inside to the outside surface of the
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