Comparing rates of CO2 generation in two pathways

Hey OTA's, A fourth pathway question. This question requires an understanding of the fate of carbon at the C1 and the C6 on glucose in each of these two pathways. I am tracing CO2 through each of the 2 pathways with colored pencils tonight. Seeing how to do this (with any explanations you might be able to provide on how ...continues

ATP production at two different steps in ox. phos.

5. Why is the oxidation of succinate to fumarate only associated with the production of two ATPs during oxidative phosphorylation, whereas the oxidation of malate to oxaloacetate is associated with the production of three ATPs?

Mitochondrial membrane and free energy release

Hello OTA's, This is a basic mitochondrial membrane question. I am struggling with calculating free energy release (as protons are transported across the membrane). I havn't been able to come up with an attack for this via google. I am hoping to find out how this example is done and what form the answer should be in. ...continues

13C as a label for metabolites in NMR spec.

Hello OTA's, Of all the basic 13C problems I am working through, this has been the most challenging for me. I made a break through find online last night: I found the original article that I believe this question was formed from. There is no answer and no grade on this problem. Its a test of following C and backing ...continues

Following C in ingested acetate to a triglyceride

Hello OTA's, This is the last of the first set of representative problems I will be posting this week. It is a 14C problem tracing C from an ingested acetate to a newly synthesized triglyceride in an animal. It requires structural justification for the answer. This problem has no set answer but is a representative of a set ...continues

Fructose bisphosphate

What is the evidence that fructose bisphosphate aldolase is a Class I Aldolase?

Saponification

1) Since calcium and magnesium salts of fatty acids are insoluble in water, how would you expect this to affect the usefulness of soap in hard water? 2) If you were to make soap (using 4 grams of lard, 2 mL of 7.8 M sodium hydroxide & boiling it) and add it to the following and inverting, what would you expect to see as far ...continues

Saturation of Lipids

If you add 1 drop of 5% bromine solution in hexane to 1mL each of 5% solution of lard, olive oil, and corn oil dissolved in hexane, what happens to the bromine that causes each mixture to turn colorless? If you continue adding drops of bromine to each, eventually the lipids change color. For our experiment it took 14 for lard ...continues

Saponification

1) If you were to make soap (using 4 grams of lard, 2 mL of 7.8 M sodium hydroxide & boiling it) and add it to Medium test tube of 1/4 tap water and inverting, what would you expect to see as far as results? 2) Why would this result occur?

Biochemistry multiple choice questions

Question 4 (1 point) Assume the pKa's of His are as follows. N term 10, C term 4, Side Chain 6. What is the net charge on the amino acid at pH 6.0 a. 1+ b. 1- c. 1/2 + d. 1/2 - Question 5 (1 point) Somehow you force the side chain of lysine into a micelle. In aqueous solution th ...continues