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1. 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...
2. 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...
3. 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...
4. 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...
5. 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 /...
6. 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...
7. 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...
8. 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...
9. 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...
10. 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...
11. 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...
12. 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...