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Happy Friday 9/15/2017 BE MEMORIZING YOUR FUNCTIONAL GROUPS
Quiz Tuesday on FUNCTIONAL GROUPS Extra Credit is also due on TUESDAY If you still want to know about Carbon more- google and watch Crash Course Biology: Why Carbon is a TRAMP!
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If you are still not understanding the “chemistry”
Thursday, September 14th Grade and Correct Basic Periodic Table Questions- on your own notebook paper Happy? Turn it in; Unhappy? do redo tomorrow Begin: Chemistry of Carbon PPT/Functional Groups If you are still not understanding the “chemistry” I recommend “The Chemical Context of Life” PPT on my website- there is also a student handout to go along with it
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Happy Friday 9/9/2015 1. Water Quiz (timed)
2. Answer Water ?s about pH, pOH, etc.-WS due Monday 2. Lecture: Carbon & The Molecular Diversity of Life HOMEWORK: MEMORIZE YOUR FUNCTIONAL GROUPS Quiz Monday on FUNCTIONAL GROUPS If you still want to know about Carbon more- google and watch Crash Course Biology: Why Carbon is a TRAMP! And also watch more about the Periodic Table
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Happy Monday 9/12/2015 1. Functional Groups Quiz (3 minutes-timed)
2. Turn in your Water WS due TODAY! 3. Lecture: Carbon & The Molecular Diversity of Life (take out this packet from Friday) HOMEWORK: Unit 1 Reading Guide is DUE FRIDAY! (Double Daily) If you still want to know about Carbon more- google and watch Crash Course Biology: Why Carbon is a TRAMP!
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Carbon & the Molecular Diversity of Life
Slide shows combined and modified from:
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Organic chemistry is the study of CARBON and Hydrogen compounds
Can form FOUR stable covalent bonds at same time (=tetravalence) Common partners = O, H, N
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4 covalent CARBON BONDS form a shape called a TETRAHEDRON
Tetrahedron modified from:
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Images from: http://www. school-for-champions
TETRAVALENCE makes large complex molecules with a variety of shapes possible
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AP Biology by Campbell and Reese; ©Benjamin Cummings 2005
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Hydrocarbons Only carbon & hydrogen Covalent bonding; nonpolar
(Ex: petroleum; lipid ‘tails’) Covalent bonding; nonpolar High energy storage
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Carbon compounds Skeleton may have single or double bonds
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AP Biology by Campbell and Reese; ©Benjamin Cummings 2005
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ISOMERS- compounds that have the same number of atoms but different structures
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STRUCTURAL isomers differing covalent bonding arrangement
C6H12O6 C6H12O6 C6H12O6
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GEOMETRIC isomers - differ in arrangement around a DOUBLE BOND
trans- form cis- form
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Be Careful! Single bonds can rotate! . . . it’s still the same stuff
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ENANTIOMER isomers - differ in arrangement around a ASYMMETRIC carbon
ENANTIOMER isomers - differ in arrangement around a ASYMMETRIC carbon Mirror images AP Biology by Campbell and Reese; ©Benjamin Cummings 2005
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Functional Groups Hydroxyl Group Ex: alcohols polar (oxygen);
soluble in water Names typically end in -ol Ex: Ethanol
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Functional Groups Carbonyl Group KETONE: within carbon skeleton
ALDEHYDE: at end of carbon skeleton
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GLUCOSE is an ALDEHYDE FRUCTOSE is a KETONE
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Functional Groups Carboxyl Group Ex: carboxylic acids; polar
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Functional Groups Amino Group Called: amines
Amino Group Called: amines Ex: amino acids (have both amino & carboxyl groups)
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Functional Groups | R -C -COO- +NH3 Amino Group Can act as a base and
pick up a H+ ion Carboxyl Group can act as an acid and give up a H+ ion H | R -C -COO- +NH3
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Functional Groups Sulfhydral Group Called: thiols
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DISULFIDE BRIDGES Disulfide bridges stabilize protein structure
LYSOZYME
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Functional Groups Phosphate Group phosphate ion Makes molecule
negatively charged Can store & transfer energy ~ ATP
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Functional Groups METHYL Group Makes molecule more NON-POLAR
METHYLATION: Adding methyl groups to DNA “turns off” genes
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Happy Monday 9/6/2015 1. Bell Work: Discuss with your group and list why carbon is a tramp! 2. Lecture: Isomers, Functional Groups 3. HOME WORK: Functional Groups worksheet & STUDY for a quiz on functional groups…..must recognize structure and function! Quiz Redo: Basic chemistry (today and tomorrow)
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