Biochemistry Definition and 93 Threads

Homework Statement You are titrating a 75 mL volume of 33 mM lactate buffer (pKa 3.86) with 1.3 M HCl (starting fully deprotonated). What is the pH after you have added 1 mL of the HCl? Give 2 decimal places Homework Equations pH = pKa + log[A-/HA] The Attempt at a Solution I don't...

I attend UC Davis, which doesn't offer Neuroscience as a major. What is the next best alternative if I want to go into cognitive neuroscience? I'm currently majoring in Biochemistry. Is that the best major for Cognitive Neuroscience? If not, what is? According to wikipedia:" Due to its...

Hello, My question is in the title :) I have just started working on my biochemistry course, and the textbook says that 'all sugars found in food and in the body are in D-form (the L-form can be found in rare cases in some plants and micro-organisms)'. But it doesn't explain why or how...

So I'm about to graduate with a degree in molecular biology and biochemistry. I don't want to do grad school right away; I want to try to get some private sector experience first. I'm open studying pharmacology, toxicology and such, but I'm really more interested in industrial and...

Homework Statement How many moles of base would be needed to titrate one mole of this fully protonated peptide to a pH of 4.00? This polypeptide is V-A-Y-K-H. Homework Equations Henderson-Hasselbalch: pH= pKa + log[A]/[HA] pKa of alpha COOH = 2.4 The alpha COOH (at the...

Homework Statement Calculate the pH of a solution of L-glutamic acid in which the ionic species with a net charge of -1 is 5 times greater than that of the isoelectric structure. (Refer to pKa Table at end of problem set). Homework Equations pKa for glutamic acid: -COOH = 2.19...

Hello, this will be my first post- so, apologies if I've accidently broken any forum rules. Anyway, my question is this: Should I major in Genetics or Biochemistry? As of now, I'm leaning toward biochem (I would love either major- biochem just covers more of my interests). However, my...

Hello everybody! In about 2 months, I will be taking 4 of the standardized ACS chemistry exams (physical, organic, inorganic, and biochemistry). I bought the official guides for physical chemistry and organic chemistry, and they've been extremely helpful. I blew through the organic chemistry...

Biochemistry doesn't use the concept of wave functions because biochemistry deal with big things that are much larger than the quantum realm. But isn't it that stochastic quantum process can affect the probability of certain occurences that can amplitude up and affect Biochemistry? Chaos and...

I am conducting a wine analysis experiment for my undergraduate biochemistry course and am a bit stuck on the influence of pH on yeast function. Why does a high H(+) concentration kill the yeast or inhibit its growth/metabolisation of the glucose? I am guessing that the hydrogen ions somehow...

My studies have nothing to do with biology, but I'm just a curious gal so I thought to pick up some ebooks or whatever. I got a good biology base and a good chemistry base, but I never tackled anything in the realm of organic chemistry. I'm more interested in learning about the chemistry of...

Hello everyone, I'm in a hectic exam schedule at the moment and I have my biochem spot exam in 5 days time. I spend much time studying for theory and MCQ so I'm really crammed for this. I'll post various questions here, if you can help me. They are mostly common sense ones, but I'm not very...

Hi all, I got another thread going, but I am getting some great info so want to expand in another direction. If I was to get my Bsc in Chemistry, and my PhD in BioChemistry, or Microbiology, what careers besides being a MD can I look forward to in the medical field ? (not interested in...

Evidence of extraterrestrial "biochemistry"? The linked article claims the apparent depletion of H2, acetylene and ethane from the surface of Titan might be evidence of "life" since (the authors claim) there seems to be no likely simple set of chemical reactions that would account for for this...

I'm planning on going down the medical path. Will a Bachelor in each of these prepare me for the MCAT and what I'll see in medical school? Less importantly, how "sellable" are these degrees relative to each other (should the medical path not work out)?

Hello everyone, I've just completed a bachelors of science in biochemistry and am now considering entering a masters in bioproceessing/chemical engineeering. Is there anyone who has gone through the same academic route or anyone who currently works in the field on this forum? If so, do you...

I got offer from both science faculty at UBC and University of Waterloo for undergraduate studies. The program i applied for at waterloo is called "Science and Business" and it's co-op mandatory which I really like because many people told me that working experience is more important than...

Hi, I'm a sophomore in college right now, pursuing my B.S. in biochemistry. However, I'm taking calc-based physics II right now and I really love physics (plus I'm pretty good at it). I want to do research related to biochemistry and health for a career, and I would like to know what physics...

Homework Statement An illuminated suspension of chloroplasts is actively carrying out photosynthesis. What would happen to the levels of 3-phosphoglycerate and Ribulose 1,5-Bisphosphate if the light was suddenly switched off? Homework Equations The Attempt at a Solution I...

Homework Statement Action of lipase and bile on milk (Lab) (Biochemistry) Homework Equations None The Attempt at a Solution I can't find information on this lab anywhere! My teacher isn't helping much, so I was hoping for any help whatsoever. Thanks! It's a planning lab - I need...

i'm not exactly sure what i want my future career to be (my interests keep changing) but right now I'm set on engineering. i did a little research and I've narrowed it down to either chemical or systems design engineering. if there are any chemical engineers out there, why did u choose this...

Homework Statement Hey, have this question which i just can't wrap my head around, any help would be appreciated. Formic Acid (HCOOH) - pKa = 3.8 is a weak acid that partially dissociates to form its conjugate base (HCOO-) and releases protons into aqueous solutions. Whats the pH of a solution...

Homework Statement If a solution of a weak acid contains more HA than A-, then Homework Equations - The Attempt at a Solution the answer is pH > pKa. Okay my question is why is this the answer. I'm trying to understand in what situation you would have the pH greater or less...

Let's speculate! For background, I am a neurobiology student. Ergo, I've got the requisite chem n' o-chem under my belt. (Would like to fit in some biochem, but I don't know if that's possible right now.) From my own perousing of the material on the internet, it seems that carbon is...

and why is biochemistry important in medicine? I kind of know why, but i can't find that much information so I am stuck and i need a bit of help if anyone could help me? Ive read that organic chemistry serves as a basis of biochemistry and biochemistry is the study of chemical processes in...

what are the available fields for a M.Sc. in Biochemistry? please help in subject as list

Biochemistry major... I need advise on picking a minor... I'm a sophomore majoring in 'Biochemistry & Molecular Biology'. My plan is to pursue a PHD in the bio-sciences (biochemistry, biophysics, bio-engineering) or maybe Nanotechnology. Between Philosophy, Physics, Math, and Computer...

Hello everyone, So I was interested in knowing how much work is usually needed to end up with a good grade (A) in this course? I am going to be taking this course sometime in the future, probably next year, the first part will be about structures and physical properties of biomolecules and...

Homework Statement Ethanol in the body is oxidized to acetaldehyde by liver alcohol dehydrogenase (LADH). Other alcohols are also oxidized by LADH. For example, methanol, which is mildly intoxicating, is oxidized by LADH to the quite toxic product of formaldehyde. The toxic effects of...

B.A. in Biochemistry ---> Ph.D. in Biomedical Engineering? Hi everyone, I've been freaking out a bit about grad school and wondering whether I have a chance. The guidance at my small liberal arts college is good, but I doubt that even one person per year goes on to grad school in BME, so the...

What is the difference between biochemistry and organic chemistry?

This has stimulated me to get around to posing a question I've meant to for some time. Chemistry gets classified among the 'Natural Sciences'. Yet there is nothing very natural about it. Most of the chemistry you will ever see, you will see only in the laboratory or the factory. You not...

Im thinking about possibly taking biochemistry at university but I am not sure if I need to take physics as well. The program doesn't require u to take it, just biology and chemistry but is it best to take physics as well? It is a bachelors degree in biochemistry.

Homework Statement This question is for a lab write up. We prepared a 0.1 M citrate buffer with pH 4.0, we then diluted our buffer with deionized water 20 fold and then 50 fold. The subsequent changes in pH are as follows, 20 fold pH = 4.10 50 fold pH = 4.14 This confuses me because I have...

I'm a Biochemistry major at the moment, as my school doesn't offer Bioengineering. My main interests lie in Neural Engineering for graduate school, as my research experience in undergrad has been mainly Neuroscience based. Will I get equal consideration for programs in Bioengineering if I didn't...

So I'm beginning college in the Fall. Considering I'm going to be a Biochemistry major, does anyone have any advice as how to survive Gen Bio? I hear it's a big weed out class for the Pre Med kids. I'm also taking Gen Chem and Calc I, both which I feel confident in, since I've studied it by...

Hi everyone, I will be pursuing a degree in biochemistry/biotechnology, and my question was exactly what or how much of mathematics would be important to understand fully most of the concepts coming from the chemistry courses that I will take? Most of my chem courses in upper years would...

Can someone help me out?? 1. The synthesis of glucose from smaller precursors is called: a) gluconeogenesis. b) glycogenolysis. c) glucosynthesis. d) glycolysis. e) none of the above I think the answer is A. gluconeogenesis...because gluconeogenesis is from puruvate back to...

I have this practical problem in my laboratory and would like to see it formulated in a formal calculus way, but my math skills were never very high and they are very rusted now and do not know how to formulate (much less solve) the problem. A biological sample containing a virus is run...

Hi, I am a Senior in HS and I am on the edge of completeing my college apps but I am still not sure what to put as my major... I love biology, but especially on the micro level. For this reason, would love to work/take courses on anything that has to do with either cells, their structures, or...

My coursework was to basically develop a process to turn cellulose into sugar. I decided to use a strong acid to hydrolyse the acetal linkages in cellulose to form D-glucose. I wanted to find the optimum conditions for the process starting with concentration. So I plotted a graph of...

Biochemistry pathologies.. ?? Hey guys.. I'm trying to set straight in my mind the basic pathologies relating to sugar in the human. Mainly, the various types of diabetes and hypo/hyperglycemia. We covered the basics in my biochemistry class, but we did it all so fast that I got lost...

What is the difference between biology and biochemistry?