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General Biology

by: Dr. Cristobal Kub

General Biology BIOL 1050

Dr. Cristobal Kub
GPA 3.56

Michael Brewer

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Michael Brewer
Class Notes
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This 3 page Class Notes was uploaded by Dr. Cristobal Kub on Sunday October 11, 2015. The Class Notes belongs to BIOL 1050 at East Carolina University taught by Michael Brewer in Fall. Since its upload, it has received 60 views. For similar materials see /class/221313/biol-1050-east-carolina-university in Biology at East Carolina University.


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Date Created: 10/11/15
Bio Lect Notes Jan 25th Goals for the day 0 Energy 0 Thermodynamics o AtP o Photosynthesis 0 Cellular Respiration Energy Energy ows from the sun through almost all life on Earth Plants for example take sun energy turn it into chemical energy that through consumption are then transferred up the food chain 1 photosynthesis plants capture energy from the sun and store it in the chemical bonds of sugars and other carbohydrates 2 Cellular Respiration Energy defined as the capacity to do work Work moving matter against an opposing force Two basic forms Potential stored energy for ex chemical bonds Kinetic the energy ofmoving objects Ex Sling shot Pulled rock potential ung rock that is in air kinetic Food is a form of chemical energypotential energy Chemical energy A form of potential energy stored in chemical bonds when broken energy Glucose can be linear or structural Ethanol used for chemical energy combustion Octane also used for combustion Triglyceride fat has more potential energy more bonds Kinetic energy examples fire ying bike riding Potential energy skier at top ofmountain not yet moving water damn Thermodynamics 1st law of thermodynamics Energy cannot be destroyed nor created 0 Only changes forms ex kinetic energy to heat 2 101 law of thermodynamics Every conversion of energy is not efficient and will lose some energy into heat this is why there is no existent perpetual motion Ex Light energy from sun energy lost in form of heat chemical energy stored in plants Energy lost in the form ofheat kinetic energy of forward motion Energy lost in the form of heat kinetic energy of forward moving ATP The molecular quotunit of currency for energy transfers in the cell Adenine Ribose sugar Phosphate groups RNA base style but this one used for energy Clean offa phosphate group for energy Adenosine triphosphate Ex The sling shot With a breaking off ofa phosphate group we transfer from potential energy to kinetic Energy released from breakdown of food goes to ATP gain energy to work loose energy eat restore Bic Lect Nates Jan 25th Phctcsynthesis Energy lrcrn sunlight is captured as chernical energy Plants use are stcrage rncleculestc use ATP energytc have phctcsynthesis Other crganisrns besides n n u t u n 39 r a andnsymbinnts g 5 React c ergylrcrn suncapturad andstnrad quotSynthesisquot Reacticn energyuseetc build sugar rnclecules Input sunlight water carhcn dinxida cxygen sugar Phctcsynthetic cells used tr rnake sugar Thylakci the quotphatnquot reacticn clphctcsynthesis cccurs here Strcrna the synthesis reacticn cccurs here I t n t t n I pigrnents ra actadby plantlile Summa ry cl quotphatnquot reactic Watarrsplitting phctcsystern light energy useetc 15 Electran39l39ranspar Chain igharanargy electrcns usadtn pump ll inta thylaknid Kinetic energy rum in usedtubuild ATP Nadphrprnducing by the electran l Haw dues carbnn dinxida enter the plant Slams npan Stnma clnsad H20 029 02 26111206 Ra 39 dlally stoma closed stoma open stoma closed Bio Lect Notes Jan 25th Getting C02 Carbon dioxide enters leaf through stomata tiny pores usually on lower surface of leaves H20 amp 02 are also lost through stomata C3 Photosynthesis Advantageenergy efficient Disadvantagewater lost to evaporation in hot climates C02 9 CALVIN CYCLE STOMATA OPEN DURING THE DAY 9 SUGAR C4 Photosynthesis Advantage water loss is minimized in warm climates Disadvantage requires more energy C02 9 Carbon uptake ATP stomata slightly open CALVIN CYCLE happens during the day 9 sugar Example Corn CAM Photosynthesis Advantage water loss is minimized in hot climates Disadvantages requires more energy slow growth C02 9 CARBON UPTAKE ATP STOMATA OPEN DURING NIGHT CALVIN CYCLE STOMATA CLOSED DURING THE DAY 9 SUGAR EX Saguaro cactus Cellular Respiration Highenergy bonds of food molecules are broken down releasing energy EX Bison slide Input 02 Sugar9 C02 WATER ATP ENERGY This is the opposite of photosynthesis Input 02 C6H1206 9 Energy C02 H2O Clicker Most common plants use what type ofphotosynthesis method C3


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