BIOL110s05-11 - BIOL 110 Principles of Biology Spring 2005 Lecture 11 M http/www.smccd.net/accounts/staplesn/biol110 Job for Science/Health majors

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1 BIOL 110 : Principles of Biology Spring 2005 Lecture 11, M 2/14/05 http://www.smccd.net/accounts/staplesn/biol110/ Job for Science/Health majors: Earn some $ on campus as a Lab Prep Assistant in Biology (prefer 1yr + commitment): See Kim Autrey in 18-209, 306-3296. Quiz #2 : In lab Today & Wed. REVIEW: Ch. 3: How Cells Are Put Together – Cell Structure – Euk. Organelles (membrane-bound) • Mitochondria, Chloroplasts • Cytoskeleton • Extracellular structures – cell walls, extracellular matrix, junctions TODAY: Ch. 4: How Cells Work – Energy (ATP & electrons) – Enzymes & regulation – Metabolism – Membrane Transport
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2 Ch. 4: How Cells Work REACTANTS PRODUCTS 6CO 2 CARBON DIOXIDE 12H 2 O WATER + C 6 H 12 O 6 GLUCOSE 6H 2 O WATER + 6 carbons 12 oxygens 24 hydrogens 12 oxygens 6 carbons 12 hydrogens 6 oxygens 12 hydrogens 6 oxygens 6O 2 OXYGEN + 12 oxygens sunlight energy Beer, Enzymes and Your Liver • Alcohol is toxic • It is broken down to nontoxic compounds by cells in the liver • Breakdown process is sped along by enzymes • Heavy drinking damages the liver and other organs
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3 I. Energy & Laws Energy is the capacity to do work • Forms of energy 1.Potential energy –s tored 2.Kinetic energy –mo t ion 3.Chemical energy (type of potential; stored) LAWS of Thermodynamics: 1. The total amount of energy in the universe is constant – (not created or destroyed, only transformed) 2. Energy is flowing from high-energy forms to forms lower in energy – (nothing 100% efficient; entropy / disorder is increasing) Energy Lost Energy Gained Sunlight energy reaches Earth.
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BIOL110s05-11 - BIOL 110 Principles of Biology Spring 2005 Lecture 11 M http/www.smccd.net/accounts/staplesn/biol110 Job for Science/Health majors

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