Search results

  1. E

    Fatty Acid chain length and its effect on binding to serum albumin

    adding: is it possible that bsa has multiple types of binding sites (we calculated 5 total sites for ANS) that are specific to the fatty acid, giving us the two different curve profiles of caproic acid and lauric acid?
  2. E

    Fatty Acid chain length and its effect on binding to serum albumin

    Homework Statement The background: We performed an experiment testing the fatty acid binding difference of caproic (hexanoic) acid and lauric (dodecanoic) acid to bovine serum albumin. The experiment was performed using a fluorescent marking called ANS(which fluoresces when bound to bovine...
  3. E

    Integral of cotx squared

    Homework Statement find the integral of (cscx)2 between pie/6 to pie/2 The Attempt at a Solution cot2x = 1 / sin2x * cos2x / cos2x which becomes.. tan2x * sec2x then i substituted u for tan x, and turned the integral into.. u2du = u3 / 3 which is.. tan3x / 3 between pie/6 and...
  4. E

    Acid/base buffer reactions

    Homework Statement Describe the preparation of 40 L of 0.0500M phosphate buffer, pH 6.9 starting with 1M solutions of KH2PO4 and K2HPO4. pKa= 7.2 Homework Equations pH= pKa + log[A-]/[HA] [b]3. The Attempt at a Solution [/b 6.9=7.2 + log[A-]/[HA] -0.3= log[A-]/[HA] [A-]/[HA]= 0.50...
  5. E

    A question about Km's of Firefly Luciferase

    So heres the background, I am currently doing research on one of the luciferase proteins. The luciferase protein creates bioluminescence using the substrates ATP and Luciferan. Its a two step process... but the general sense is that u can use the light to measure the activity of the protein as...
  6. E

    Implicit Derivation

    aahhhh, lol. Ok, so how do i know that the tangent line is simply x = 1? edit: oh wait, i think i got it. So i realize the slope is divided by 0, which means that the limit approaches infinity, and the slope is undefined, what i don't get is how u make the next connection and say that the...
  7. E

    Implicit Derivation

    ok, yea that makes more sense. So the answer to the question is that the tangent is undefined
  8. E

    Implicit Derivation

    I'm still a little confused, if the slope was infinity wouldn't the function be increasing infinitly as well? i'm a little confused
  9. E

    Implicit Derivation

    so as the derivative goes to that point, it goes to infinity, telling us that the function must also be growing infinitly. But bottom line, the tangent line does not exist at (1,1), right? b/c there is no derivative at the point (1,1), there is just a limit
  10. E

    Implicit Derivation

    Homework Statement What is the derivative of x^2 + y^2 = 2y, and find the tangent line to this equation at (1,1) Homework Equations The Attempt at a Solution I get y' = x / (1-y). However, how do I find the tangent line to this? When I plug in the values it divides by zero! (1 /...
  11. E

    Derivative Problem

    o i ggot it! so it become 2 = e^(-x-2x) and then you simply take the ln... thanks jeffreydk
  12. E

    Derivative Problem

    Homework Statement I have to find the min and max of this function using derivatives: (e^(-x)) - (e^(-2x)) The Attempt at a Solution f'(x) = -e^(-x) + 2x(e^(-2x)) So now i set that to zero, and I get... 2x(e^(-2x)) = e^(-x) And at this point I have no idea what to do. If...
  13. E

    Important Question about RNA processing

    I had a question about how the RNA processing occurs. I know that the RNA is transcribed off the DNA, and then the introns are removed(sometimes in different orders), and then the capping occurs. My question is whether or not different segments of RNA can fuse together before during the...
  14. E

    Biology Lab Abstract: Photosynthesis

    yea, thats it, we used DPIP as an electron acceptor, i didn't even think about it, but it does change from blue to clear as it is reduced...can't believe i missed that, thanks for your help
  15. E

    Titration problems

    would that fact that H2SO4 is a polyprotic acid do anything?
  16. E

    Biology Lab Abstract: Photosynthesis

    [SOLVED] Biology Lab Abstract: Photosynthesis Homework Statement I am having trouble understanding how increased transmission is an indication to photosynthesis occurring. My teacher gave us the prediction for this lab: if photosynthesis is happening then transmittance goes up. I know...
  17. E

    General Chemistry - Chemical Equilibria

    I could be completely wrong, since i have little experience with complicated equilibrium problems, but what I think you should do is subtract the equations, and then do the appropriate math with the K values. Remember adding equations multiplies the K's, subtracting equations divides the K's...
  18. E

    Chem Lab Help: Equilibrium Systems

    Homework Statement Explain what happened when the solution was added to water in terms of Le Chatelier's principle and ocument your explanation using observations. Think Carefully! write out the correct mass action expression before you answer--this is subtle! Homework Equations a...
  19. E

    Do free will and conscious thought exist?

    A persons decision making would be changed, and their reasoning would change, take sociopaths, their brains are only slightly different and it is clear that they feel less emotion, and their reasoning follows a different path than a normal human, but conscience doesn't disappear because of a...
  20. E

    Do free will and conscious thought exist?

    I like this statement, really ties in with what is going on in the computer world, with Artificial Intelligence being created for a number of things. Which brings up another question, do you think that robots have 'conscious thought', does their programming compare at all to the neuron pathways...
  21. E

    Do free will and conscious thought exist?

    Ok, i'm seeing how free will and conscious thought are seperate matters. What I was really looking for is how conscious thought happens, biologically. And how this could lead to free-will
  22. E

    Do free will and conscious thought exist?

    "I'm only a high school student, but having recently studied the nervous system I would have to say that there is free will, if free will is defined as the ability for the brain to analyze senses and make create different options, in some cases each with a probability of living, for example if u...
  23. E

    What are senses?

    I have no evidence at all, only the vague recollection of an article I read about humans having telepathic thoughts that can link our brains. I'm pretty sure the article was debunking this myth and actually saying that human brains can analyze each other subconsciously, i.e. we can pick up on...
  24. E

    How do we define life?

    Yes, i agree with you, thats because robots do a linear process form(i.e. sense --> analzyze --> respond(action)) and the human mind is a cyclic cycle, right? So that means humans will sense something like heat and move away, then sense some more and continue doing this cycle. whereas the...
  25. E

    How do we define life?

    I'm only a high school student, but having recently studied the nervous system I would have to say that there is free will, if free will is defined as the ability for the brain to analyze senses and make create different options, in some cases each with a probability of living, for example if u...
  26. E

    Medical Nervous System Problems/Diseases and multiple sclerosis

    Hi, my AP bio class is going over the nervous system, and brain structure and eventually will be discussing diseases that attack the nervous system. Does anyone have any good examples I could bring up? I also am looking for an answer as to why in multiple sclerosis the myelin sheaths are...
  27. E

    Chem Lab Help

    [SOLVED] Chem Lab Help!! My AP chem class did an experiment where we started with 0.500 grams of copper and we ended up with 0.525 grams of copper after the experiment. The experiment consisted of us sending copper through different reactions to observe the effects of a series of reactions on...
Top