Lecture-1-Themes-in-_42852

Lecture-1-Themes-in-_42852 - theproductsof>;changethat i

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•The biological world and all of its inherent features are the products of >3 billion years of change; change that: –h a s resulted in a multitude of adaptations –i s present at the molecular level through to the organismal level –r e lies on the genetic variation possessed by all populations of species s preserved and passed on to future generations myoglobin hemoglobin
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Chimpus becilus Apes stupidus Neanderslob The Dawn of Homer Monkious eatalotis imbecilus Homersapien he process of understanding biology begins with curiosity & inquiry The process of understanding biology begins with curiosity & inquiry –answers come from a methodical approach of scientific observa tion & experimentation. Understanding the enormity of biology begins by developing a view of life based on a few “big ideas” or themes that permeate all areas of biology: Emergent properties Exchange of Matter & Energy Cells–basic unit of life DNA – molecule of life Form Fits Function Biological systems are regulated The big one Æ Evolution
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•I n BIOL 1361 we will be exploring the features and properties of life often from a reductionist viewpoint. – Reductionism: examine the “parts” that make up the complex form in order to understand how it functions. –A s the “parts” are put back together, new features emerge that the individual components themselves do not possess. [emergent roperties] properties] •T h e reductionist approach reveals the scope of biology as it is rganized into different levels: organized into different levels: –L a r g e s t (biosphere, i.e., Earth) to smallest (atoms) –Th e dividing line between life & non life: the level of the cell g emergent properties ; depends upon arrangements & interaction of components at each level.
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Levels of Biological Organization The biosphere osystem: Ecosystem: (All living + non living components in specific area) Communities (all ing species in a a specific area) Forest living species in a specific area) Populations (all members of a species Organisms (individuals) in an area) Maple trees Single maple tree
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ells* Levels of Biological Organization (continued) Organs & organ systems ( 2 or more ssues Cells Cell Organelle (molecules 10 μm tissues ) arranged to form a functional component) Leaf of a maple tree Chloroplast Atoms Tissues (group of similar cells) 1 μm 50 μm Chlorophyll molecule Molecules (combinations of atoms) What is the lowest level at which photosynthesis will occur?
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uter membrane Systems Biology systems biology approach
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Lecture-1-Themes-in-_42852 - theproductsof>;changethat i

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