Saturday, October 12, 2013

Sharing some more.

I find it very hard to buy books given that I am constantly broke. I do, however, own a kindle to which I download all my boks to.

I recently scanned the Solutions Manual for Organic Chemistry by Brown, Foote, et all.
I found the answers for the first 15 chapters online and I uploaded them here:

http://www.4shared.com/zip/N_8Cbk2K/Solutionsmanual_5thed_organic_.html

Note:
These are for the 5th edition

And a few more here (8-13 6th edition)
http://www.4shared.com/file/IAjmWcIW/OrganicChemistriyBrownFoote-so.html


Now for the 6th edition I scanned them myself and therefore the quality is terrible but hey, its better than buying the book. I have chapters 16-29 in several files, you'll know which one is which:

http://www.4shared.com/office/oHpbiZU2/chapter-16.html

http://www.4shared.com/office/fJvdUWpq/solutions-chapters17-21organic.html

http://www.4shared.com/office/QXf0O8Ro/Solutionschapters23-29_organic.html


Hope you can use them and don't forget to share anything you have.


Friday, October 11, 2013

Just Sharing...

I was recently interviewed BY Accepted.com regarding the medical school admissions process and even though I am only starting they featured me.

Here's the link if you want to read the interview (trust me YOU WANT TO READ THE INTERVIEW. 


Much Love, 

Me :) 


Tuesday, October 1, 2013

Volunteering

Last Thursday was my first day volunteering at a hospital. I've been hesitant throughout the application process and just to finally make the move and start putting my premed clinical hours together. I applied to a couple of hospitals and did a lot of research I ended up in a teaching hospital about an hour and fifteen minutes away from my house by train. It was the best choice due to the good structure of the volunteer office and of the hospital itself. 
I, however, was not happy. It was bitter sweet to begin donating my time because what I really wanted was to find a job on a medical setting for my clinical hours. Don't take me wrong I like volunteering, I've done it before and I enjoy it. But when it comes to medicine I really wanted hands on experience. I want to help the patient in a way that will impact them, make a real tangible physical difference. I've been applying for jobs I even took phlebotomy and EKG classes to increase my chances but lack of experience disqualifies me most o the time. I went into my shift at the hospital that day both excited and doubtful. I doubted there was something important enough for me to do, I doubted anyone would need me. 
My unit is ortho-vascular post surgery so lots of casts and people in pain. What I did the most was bring things to patients: ice cram, ice, tissues, TV listings, etc. as the hours passed I became more comfortable talking to patients, I was assigned to a particular 92 year old in extreme pain who thought it was Sunday. I spent a lot of time around her. I did lots of rounds jut asking if someone needed anything and usually got at least one patient to give me an errand. 
The nurses, I have to say, were extremely nice and they also gave me tasks and things to do which I appreciated given that I absolutely hate standing around while people are busy around me. I also got to walk with patients to help recover mobility and some pushing patients around on the stretchers. 
Towards the end of my shift some interns asked me if I was queasy and did I want to watch them drain a vac. Hell yeah!!!! I did not know what it meant but still yeah. The patient was an amputee who had just had surgery on the amputated leg and the wound was open. I could see the inside of the leg and the way the intern held pressure and stopped the bleeding was awesome. My shift was over but I stayed longer to help out with this and the intern had me help him. He would tell me what he needed and I would hand it to him. I felt like a surgery assistant. It was good. 
I am satisfied beyond my expectation by this experience. I figure it is not normal to be this excited about seeing blood and open wounds. I must be predestined for this kind of thing, pre-designed. I guess what I walked away with the most was the knowing that I belong in medicine. That this is what I was born to do and all the hardships I am currently facing to get there is worth it.

Friday, September 13, 2013

Reaction of the week: Cyanohidrin Formation








Some notes on this reaction before we move on to the mechanism:
  • ·         Useful to form new carbon/carbon bonds, as we see in the end product.
  • ·         The cyanide anion forms from the HCN by easily ionizing in solution.
  • ·         This reaction can be done with aldehydes or ketones. However, the reaction favors the addition product with aldehydes and methyl ketones. The longer your ketone chain is, the less the reaction product is favored.
  • ·         In the last step (shown soon), the negatively charged oxygen can be protonated by water or other HCN molecules in solution.
  • ·         Since a cyanohydrin is an addition product, the HCN is not a catalyst and is consumed in the reaction.


Let’s go through the mechanism! 




This post was made by Faith, @premedprobs01, a premed student in Colorado aspiring to become an MD working either in oncology or rural primary care internationally. Check out her original blog atwww.goodandfaithfulservice.wordpress.com

Tuesday, July 23, 2013

Reaction of the Week: Aldol Condensation/Addition

written by Faith of @premedprobs01

Aldol condensation is a useful reaction mechanism that you will encounter towards the end of your organic chemistry career. It’s a useful mechanism because the steps are very similar to several other reactions that you’ll run into-like crossed aldol condensation, Claisen-Schmidt condensation, Claisen condensations, crossed Claisen condensations, and Dieckmann condensations. Pay attention to the electron arrows! I apologize in advance if they are unclear, my chemsketch program is not the best.

Mechanism Breakdown
We’re going to demonstrate aldol condensation with a molecule of acetaldehyde, which for those of you who hate nomenclature looks like this:
An aldol condensation happens in three steps with one intermediate resonance structure. The first step is the formation of the enolate anion (for which I will show the resonane structures). The second step is the addition of that enolate to another molecule of acetaldehyde. The third step is the protonation of the addition product to result in the aldol product. Ready? Take a deep breath. Here we go!
Image
The first step in aldol condensation is forming the enolate anion. This particular example is base-catalyzed aldol condensation. We’ll go over acid-catalyzed in another posting. In base-catalyzed aldol condensation, OH- ions in solution will remove a proton from the methyl group next to the carbonyl carbon. (The carbonyl carbon is the one with the oxygen attached). This proton can be removed from the methyl group because of its proximity to the oxygen atom! Being near an oxygen atom tends to make protons more acidic, or more readily available to be removed. This combined with a strong base allows the methyl group to be deprotonated and an anion to be formed with water as a byproduct. Let’s look at the resonance stabilization of this anion!
Image
This resonance stabilization is important because it confirms that the enolate anion is stable enough to carry on to the next step of the reaction. The fact that the electrons are delocalized between the CH2 and the oxygen lends it a bit of extra stability so that it won’t immediately be re-protonated. Now it’s time to look at the addition reaction of the enolate to another molecule of acetaldehyde.
Image
In this step of the reaction the negatively charged enolate attacks the most electrophilic part of the second acetaldehyde molecule. This would be the carbonyl carbon, or the carbon directly attached to the oxygen! The enolate ion attacks the carbonyl carbon, which breaks the double bond to the oxygen and gives the oxygen an extra pair of electrons, leaving it negatively charged. We are so close to the product now, and the last step is stupid easy. Here it is!
Image
In this last step, the negatively charged oxygen picks up a proton from water you have in solution, and the electrons from that proton are kicked back off onto the oxygen, thereby regenerating your base! Since the base is regenerated, this reaction is referred to as base-catalyzed. The final product’s structure gives us a clue as to why this is called an aldol reaction. It’s because the final product contains an aldehyde functional group and an alcohol functional group. Practice this reaction, and tune in next time (probably not next week as I will be on vacation) when we look at crossed aldol condensations!
This post was made by Faith, @premedprobs01, a premed student in Colorado aspiring to become an MD working either in oncology or rural primary care internationally. Check out her original blog at www.goodandfaithfulservice.wordpress.com

Tuesday, July 16, 2013

How to succeed in Organic Chemistry by a Premed with a job.

The following are a series of steps I consider necessary for doing well in Organic chemistry 1. I am currently preparing for Orgo 2 and would have loved someone to give me more of the heads up when the first one hit. I had a little prep but not nearly as much as I needed. I did not do as well as I wanted to in the class therefore I am learning from my mistakes and helping YOU not to make the same.

Here are what I consider the necessary steps for succeeding in Orgo:

1.Prep: start studying MONTHS prior to taking the class. I did a month and it was not enough. Try reading a book other than your textbook. There are several Orgo prep books such as "Organic Chemistry as a Second language" and "Organic Chemistry for Dummies"* which will give you the basics broken down so you can easily grasp the SKILLS which will prepare you for the DENSITY of the material. Once you begin the semester, you wont be a blank page. The teachers words will be familiar. DO NOT GO IN blank.

2. Attend: I personally did not attend my Gen Chem lecture and did fine, but for this one you NEED to attend. You will learn the expectations of the professor as opposed to just learning every chapter fully on your own and wasting time on subjects they teacher does not want you to know. Some teachers suck, I know, but they are the ones MAKING the test and you need to know what is on the test. Go to class.

3. Study: and by this mean teach yourself. Some people work better studying a little every day. I work better studying a lot once a week. However with this class I studied a lot two to three times a week, by a lot I mean around 4hrs at a stretch. Find what works for you and DO IT with discipline. PRACTICE. Don't read over and over. Do exercises. If your teachers dont provide you with materials to practice look them up online or do the back the book but PRACTICE. Draw mechanisms, invent reactions. TIME YOURSELF every exercise should take your around 10mins with accurate answers. PRACTICE until you can beat this speed.

4. Dont cram: needs no explanation. Every chapter has at least six reactions to master. Every reaction has start materials mechanism and products. If you cram even just two chapters you'll be lost. Do the math.

5. Dont share: this class will consume your time. I know people got to work* (I work) but you will only succeed if this is your priority. So don't take with other big classes nor sciences, take it with history or sports. Work as little hours as your budget allows, take a break from all those clubs you've been joining. Invest yourself.

6. Take breaks: this may sound like an oxymoron but make sure you sleep some. Take a day or two a week in which you do not look at Orgo stuff at all. You do not check grades or your email or even see your study buddy. Dont drink, the hangover will make you waste an extra day.

7. Seek help: the SECOND you feel lost go talk to someone about it. Even if it is your mom or your BFF, they may provide the support you need to keep going. Try your school learning center, go to review sessions, join a study group, find a tutor*, go to the instructor and tell them you are struggling they like to see your effort. Dont wait till you are about to drop it. Seek help as soon as you feel you need it.

8. Keep going: If you are determined to go into medicine nothing should stop you. You may feel like this is too much for you, like you cannot do it, like Med school will just be worse and you don't have the brains for it. I promise you do. Do not let the "weed out" class weed you out. Beat the statistics. And whenever all the brainiacs around you are pretending the class isn't hard, IGNORE them. They probably don't have as many responsibilities to juggle as you do.

*I have to make a note for independent students, post bach and every on on the non traditional track. This class needs to be your priority and that may bring problems financially or at work. Talk to your supervisor and tell them you may need to leave early or come late on occasion. Take a day off before the exam. Minimize your expenses so you can survive on less hours at work. This class took a big financial hit on me which took down anxiety attacks so I know what I am talking about. For things like tutoring and books which some of us cannot POSSIBLY afford there are ways to do it. You can a group tutor which are generally cheaper or trade services with someone (You tutor me I clean your house kinda thing). For books I mostly download pdfs.

FEEL FREE TO ADD YOUR OWN TIPS!!!!

Tuesday, June 4, 2013

Determination of the equilibrium constant

Make sure to follow the instructions


Determination of the Equilibrium Constant, K and Ɛ at 45onm

Cell Voltage

Make sure to follow the instructions


Cell Voltage

Drosophila calculations

Make sure to follow the instructions


Drosophila Exp

Nickel graph

Make sure to follow the instructions


Nickel Graph

Simple Harmonic Motion

Make sure to follow the instructions


Simple Harmonic Motion by prehealthhelp

Torque

Make sure to follow the instructions


Torque by prehealthhelp

Equivalent heat

Make sure to follow the instructions


EquivHeat by prehealthhelp

Unequal forces

Make sure to follow the instructions


Unequal Forces by prehealthhelp

Time vs Distance graph

Make sure to follow the instructions


Measurements and Calculations for distance, velocity and acceleration by prehealthhelp

Hooke's Law

Make sure to follow the instructions


hookes law by prehealthhelp

Motion with constant acceleration

Make sure to follow the instructions. The stuff I am missing here comes from a table next to the grapch the computer gives you MAKE SURE YOU PRINT IT OUT. I didnt. 

Centripetal Force

Make sure to follow the instructions

Centripetal force by prehealthhelp

Elastic and Inelastic Collisions

Make sure to follow the instructions

Elastic and Inelastic Collisions by prehealthhelp

Centripetal Force

Make sure to follow the instructions


Instructions to download EXCELL and WORD docs

Mos of the lab documents are excell sheets that, as I explained on the previous post, I am trying to make available for your own edition with YOUR OWN lab collected data.

I realize you wont be able to download it directly from this blog unto your computer as an excell file, however you can follow the post link to Scribd and then download it from the orange tab that says DOWNLOAD which will give you choices CHOOSE EXCELL if you are downloading a Physics or Chem lab.

If you find it easier you can go directly to our scribd profile (http://www.scribd.com/prehealthhelp) and get all the materials from there. They can actually send it directly to your cell phone and they also have an app.


Waves-Physics lab

Make sure you follow the Instructions

Sunday, June 2, 2013

A word on the physics post

I am uploading my old Physics-1 lab excell sheets. My handwriting is terrible so I do everything on the computer.Physics is easy and is on the curriculum to raise your GPA so make sure you perform.
Most of my formulas are correct. The idea is that you download them and plug in YOUR OWN numbers into the excell sheet. Right now I am having a hard time keeping the files on excell format since scribd transforms them into pdf, if you know how to fix this, or about a different site that does not change the format please HELP.

If you have any questions, suggestions, or can help me with this click on the "about us" tab and shoot us an email.
Also, if you want to see all the documents in one spot, go to our profile on Scribd at http://www.scribd.com/prehealthhelp


Thank you

Wednesday, May 29, 2013

Genomes evolution

Genomes and Their Evolution by prehealthhelp

Gene Regulation

Gene Regulation by prehealthhelp

Biotechnology

Biotechnology by prehealthhelp

Inheritance

The Molecular Basis of Inheritance by prehealthhelp

Mitosis and the cell cycle

Cell Cycle, Mitosis,Chaper12 by prehealthhelp

Respiration and photosynthesis

Metabolism - Respiration by prehealthhelp

Metabolism at the cellular level

Chapter 8 - Introduction to Metabolism by prehealthhelp

Cell Communication

Cell Communication by prehealthhelp

Tour of the cell

Chapter 6 - Tour of the cell by prehealthhelp

Macromolecules

Chapter 5-large biomolecules by prehealthhelp

Water and Carbon

Chapters 3 & 4- Water and CArbon by nomas616

Tuesday, May 28, 2013

Chapters 1 & 2, study help.

Chapter 1 & Chapter 2 - Chemistry and Life

Welcome aboard the premed boat!!!

There are three things that all pre-health students share:

1. The goal: of becoming a health provider, whether that is physician,  nurse practitioner  physicians assistant, dentist or pharmacist: We all want to serve.

2. The requirements: before we are even accepted at our respective professional schools we must all take at least two and a half years of crazy science courses, pretty similar across the board, that are difficult and require lots of time and energy investment. In most cases, the grading does not reflect our effort. 

3. The struggle: between typing lab reports, staying awake in class, preparing for that test, submitting the mastering homework, getting to your volunteering on time, and/or signing up for research, we really have no time to have a real "life". I bet you spent a lot of miserable time exhausted in front of the computer, trying to work past your brain thinking limit. 

I want you to know that you are not alone. There are thousands of us trying to become the next generation of  health providers and we are here to help each other. 
In this blog, you will find answers to homework assignment from classes others have taken already and that fit the pre-med requirement curriculum  I will post worksheets with answers, vocabulary sheets, reviews, any form of material that helped me or someone else, and may help you. 

My goal is to create a community of pre-med students who share studying resources in order for ALL of us to ace the classes. Hopefully, we will also share experiences and anecdotes so that any incoming freshman or non-traditional student may learn from our steps. 

Stay tuned for some great material.