1 Welcome to Bio181L! Section 33, Room 420 ASHA Section 33, Room 420 ASHA.
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Transcript of 1 Welcome to Bio181L! Section 33, Room 420 ASHA Section 33, Room 420 ASHA.
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Welcome to Bio181L!
Welcome to Bio181L!
Section 33, Room 420
ASHA
Section 33, Room 420
ASHA
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2What 181L is
• Thinking, Understanding, Investigating, Evaluating
• Not arrive, assembly line, leave
• Manual pp. ix & xi should help
• Not sync’ed with most lecture sections, but internally coherent & mutually reinforcing
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Expectations• Read the lab manual BEFORE lab
• Be ON TIME to class
• PARTICIPATE, ASK QUESTIONS
• Complete the assignments (online, etc)
• Think, evaluate, investigate, understand
• No phones, or zero on your quiz
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Attendance
• Absences must be excused through Asya Roberts in BSE 109
• Arriving late/leaving early is absent
• Make-up labs that same week, permission from Asya
• Miss 2 labs and you should drop, or we’ll do it
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E-mail/Office hours• Friday 10-11 @Koffler 209
• Notify me via email if you plan to come or I will not be there
• All emails received by Monday night each week will be answered by Tuesday afternoon
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181 Lab ACCOUNTS
• http://blc.arizona.edu/courses/181lab (Safari home page)
• Click ‘Create Accounts’
•Your section number is: 33
• Bio181L_Go is the way to do your work. Browser bad
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7What’s an Assessor?
=>Chatting<=
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8My Webpage• Get there via homepage* => Instructors => Sxn#33
*http://blc.arizona.edu/courses/181Lab (Lab Man yellow page)
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ALL HOMEWORK ASSIGNMENTS DUE @ 10PM the night before your lab (TUESDAY)
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10Some advice
http://www.damnlol.com/please-do-me-right-now-224.html
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11Policies & Grading• Syllabus (Linked on course homepage)
• Assignments
• On-line assessments/tutorials (10%)
• In-class quizzes (15%)
• Lab assignments (LABAs--Lab Activity Based Assignments) (50)
• Lab Projects & reports (combine to 25%)
• Every assignment is posted & reported on basis of 100%
• For electronic assignments, log in again to see your recorded score
• Also reported to you at the end
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Plagiarism
• http://deanofstudents.arizona.edu/codeofacademicintegrity/
• DO YOUR OWN WORK
• Plagiarism agreement (Manual, p. xiii)
• READ, sign, and turn in for 10 points on quiz next week!
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1313
the Tao of Moleculesthe Tao of Molecules
How molecules feel & the world they live in
How molecules feel & the world they live in
How? Why?
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1414
Primary goalsPrimary goals
• Create understanding by observation, reasoning
• Chemical foundations for the course:• Water & its properties• non-watery things• Know molecules as real & tangible
things
• Create understanding by observation, reasoning
• Chemical foundations for the course:• Water & its properties• non-watery things• Know molecules as real & tangible
things
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From The Secret of Scent, Luca Turin p.28
When a journalist asked the great physicist Richard Feynman what single sentence would best encapsulate all science so far if it were to be the sole surviving scrap of all we knew, he replied, “The world is made of atoms.”
When a journalist asked the great physicist Richard Feynman what single sentence would best encapsulate all science so far if it were to be the sole surviving scrap of all we knew, he replied, “The world is made of atoms.”
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16Atoms: They’re how life works
• Carbs: C, H, O
• DNA, RNA: C, H, N, O, P, [Mg++]
• Protein: C, H, N, O, (S), (P), [traces]
• Membranes: C, H, N, O, P, (S)
What cannot be done with assemblages of these atoms* cannot be done by living organisms, nor their
cells, nor their spit, etc.
*OK, fine, there’s the occasional role for Ca++, etc.
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17Who am I?• At birth, # protons = # electrons
• Atoms seek completion, which means outermost electron set = 8 (hydrogen, helium it’s just 2)
Freeman Fig. 2.1a
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1818
SymbolizingSymbolizingAtoms & MoleculesAtoms & Molecules
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19Coloring your world
You will be tested
on this
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20Views of Water
H2O
HO
H
See lab manual, p. 0-3
(There will be a test)+
+
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21How to draw molecules
Carbon Hydrogen Oxygen Nitrogen
Figure is from Lab Manual p. 0-5
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22Interacting with H2O
To your StructViewers!Desktop => Bio181L_Go
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2323
Doing itDoing itComputers, stations
Write your group name down; otherwise you can’t retrieve your work!
Computers, stationsWrite your group name down; otherwise
you can’t retrieve your work!
Open “Tao_MCB181L” on your desktop
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2424
TA-lead discussions
TA-lead discussions
Talk to me about what you’re doing!Talk to me about what you’re doing!
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25“Salting out”
• It’s a real term; used to refer to a situation where the addition of salt (portable charges) alters the solubility of other molecules in water
• Why should this be?
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26Evaporation• First things first--what is it? What’s going on in terms of
molecules
• Experiment: Ethanol and water on your arm: which is cooler & why?
• Prediction: based on molecular weight, which should evaporate more quickly--H2O (2 x 1 + 1 x 16) or CH3CH2OH (5
x 1; 2 x 12; 1 x 16)
• If not, why not?
• Salt in your sweat
• What benefit might there be to adding NaCl to water that you are intending to evaporate?
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27Clean up!
• Oil waste in the hood
• ethanol waste in the sink
• anything too messy wadded up and discarded
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28What’s vocabulary homework?
• EITHER both versions of the crossword exercise
• OR VocabuWary with a better than threshold score
• For “Atoms & Molecules”, F12, that’s 60,000
• Errors count off. Slowness counts off.
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2929Homework due 10 p.m. before
lab
Homework due 10 p.m. before
lab
Assessor: 181 Intro ’12Vocab Atoms/Mols: xWord(x2) or ‘Wary
Assessor: Molecular World Tutorial
Assessor: 181 Intro ’12Vocab Atoms/Mols: xWord(x2) or ‘Wary
Assessor: Molecular World Tutorial
Next week’s quiz will includeConcepts from today
Atom colorsDeducing partial charges (from tutorial)
Manual Ch. 2
Extensive! In Depth!