Transcript File - Giving YOU the power to impact medicine!

The American Medical Student Association
•Welcome!
•New VP & Secretary
•National Convention Package
•Committee Meetings!
Welcome New
Vice President & Secretary!
Vice President: Sarah Warda
Secretary: Paarth Choksi
MCAT Questions
Of The Day
General Chemistry
In HClO4, what is the oxidation number of the chlorine
atom?
A) -1
B) -7
C) +1
D) +7
Explanation: The typical oxidation number of oxygen atoms is -2 (as a
general rule). We have four oxygen atoms so their collective
oxidation number is -8. As another general rule, the oxidation
number of H is +1. HClO4, as a compound, has a total oxidation
number of 0, hence the oxidation number of the chlorine must be +7
to balance out the -8 from the oxygen atoms. Hydrogen contributes
+1, chlorine +7, and oxygen -8 for a net total of 0.
Physics
Which of the following resistors must be placed in series
with a 10 Ω, 20 Ω, and 50 Ω resistor in order to create a
total resistance of 100 Ω in the circuit?
A) 1/20 Ω
B) 1/19.83 Ω
C) 19.83 Ω
D) 20 Ω
Explanation: Resistors placed in series will add their resistances. Hence a 10,
20, and 50 Ω resistor in series create a resistance of 80 Ω in the circuit. To
bring the total resistance in the circuit to 100 Ω, a 20Ω resistor must be
added.
Biology
Which of the following amino acid substitutions would likely have the
greatest impact on the 3-dimensional structure of a protein?
A)
B)
C)
D)
aspartic acid to lysine
valine to leucine
isoleucine to leucine
tyrosine to phenylalanine
Explanation: Valine and leucine both have hydrophobic R-groups that are very similar in
size; isoleucine and leucine are isomers of one another with a minor difference in the
placement of a methyl group; tyrosine and phenylalanine are very similar in structure
where both phenylalanine has a phenyl group while tyrosine has a phenol group. The
biggest difference would be between aspartic acid and lysine. Aspartic acid has a
relatively small, negatively charged R group while lysine has a much larger, positively
charged R group. These opposing charges would have a substantial impact on their
surroundings and would thus be most likely to impact the 3-dimensional structure of
the protein. Of course, the location of the amino acid is also important in its impact on
the structure as well. Because we are not given this information, we cannot take such
measures into consideration here.
Organic Chemistry
Hydrogenation reactions are usually also reduction reactions, whereas
protonation is not reduction. The primary reason for this is:
A) protonation only occurs with nitrogen and oxygen atoms
B) hydrogenation does not affect the oxidation state while protonation
does
C) protons do not come with electrons while hydrogen atoms in
hydrogenation do come with electrons
D) protons are too small to reduce compounds
Explanation: Addition of H2 is the addition of two protons and two electrons.
Protonation is simply the addition of one proton. Since reduction requires
the addition of electrons (decrease in oxidation number), protonation cannot
be a reduction. (A) is incorrect because other atoms can be protonated and
even if it were true, it would not explain why protonation is not reduction. (B)
is incorrect because they can both affect oxidation state. (D) is incorrect
because size has no bearing on whether or not a reaction is a reduction.
Upcoming Events:
February 2013
• Wednesday, February 13th: 1st Committee Meeting
TODAY! (5-6PM LSB-142)
• Wednesday, February 20th: Rush Medical College
and Chicago College of Osteopathic Medicine, Medical
Student Panel
• Wednesday, February 27th: Aisha Sozzer, 4th year
medical student at Rush Medical College shares her
personal experience and gives advice on med school
admissions!
• FEB 27TH: DEADLINE TO APPLY FOR
“ACTIVE MEMBER STUDENT PACKAGE”
Trip to National Convention!
National Convention
AMSA's Annual Convention
March 14-17, 2013 * Washington, DC
National Convention
Documentary AMSA-Loyola
Spring 2012-Houston, TX
http://www.youtube.com/watch?v=SY2dZh4DTI&playnext=1&list=PLzItsdDJSY6z
ghubTMCR7DPjXhk3mG91t&feature=resu
lts_main
Cost:
• National Member: $265
• Non-National Member: $365
• Round-trip Airplane Tickets: prices vary
• Hotels: prices vary
• March 14-17 (Depart 13th, Return 17th)
Funding Your Way
to Convention
• We understand that funding yourself to an
event like this can be difficult, So the E-Board
is making your trip more affordable!
*ACTIVE MEMBER STUDENT PACKAGE:
-We will cover hotel costs for whole trip!
-We will cover 1 of your airplane tickets!
Email [email protected] if you’re
interested in going & want this package!
*Work in progress, package deal not final. Confirmation date TBA
Get your T-Shirt!
• T-shirts have
arrived—pick yours
up today if you
haven’t already
received one!
• Never too late to be
a member!
• $20 & 20 points!
Office Hours
(Office located in LSB Atrium; 3rd floor)
*Now by appointment only*
If you want to meet with any one of the
E-Board members to pay your dues,
socialize, or make your voice heard,
please schedule an appointment by
emailing us at [email protected]
with your reason and availability (:
OFFICIAL WEBSITE:
WWW.AMSALOYOLA.ORG
Email: [email protected]
Facebook Group:
AMSA-Loyola
Make Your Voice Heard
Twitter:
@AMSALUC
#amsaluc
Committees:
Meet the Assistant Directors
Advocacy: Aravind Jagadeesan
Healthcare Ethics: Annie Bolamperti
Community Outreach: Anisa Pashaj
Fellowship: Ankit Patel
Campus Activities: Burhan Adhami
Research: Rizwan Khan
Join a committee!
Learn more about Committees!
Thank you AMSA!
See you next week!