Emily C

1. Sheep liver pyruvate carboxylase reacts with cyanate with subsequent loss of its acetyl-CoA dependent activity. The kinetics of the reaction were studied by isolating the effect of the enzyme by

running the reaction in an excess of cyanate. In fact, several sets of experiment were run with different concentrations of cyanate and an initial 1 μM concentration of the enzyme. The results were reported as the reduction in the initial activity for a given cyanate concentration. They are shown in the table here. The first column is time in seconds. The next four are all percent of initial activity for the following concentration (all mM) in order: 50, 100, 200, 300.

0 100 100 100 100

600 97 94 89 84

1200 94 89 79 71

2400 89 79 63 50

3600 84 71 50 35

4800 79 63 40 25

6000 75 56 31 18

9000 64 42 18 7.5

12000 56 31 10 3

A) Assume that the stoichiometry of the carboxylase-cyanate reaction is 1:1 and determine the percent change in composition of the least concentrated cyanate solution as the reaction proceeds from 0 to 12000 sec.

This is not supposed to be hard. I don't know what I'm missing.

I had to reset my computer and now I'm trying to sync my iTunes back onto my computer according to these instructions on the Apple website: http://support.apple.com/kb/HT1329

I can get to the step "Copy music to new computer", step #5. When I opened up my iPod in My Computer (I have a PC), I cannot find a folder called iTunes. I still have all my songs on my iPod. Furthermore, all of the other folders in the picture (Contacts, Recordings, etc.) are all present, I just can't find iTunes. Can anyone help?

We're studying symmetry, and I don't have a clue.

I know he didn't participate on the Abbey Road version. . .

The following is a quote from an article in the August 18, 1998, issue of The New York Times about the breakdown of cellulose and starch: "A drop of 18 degrees Fahrenheit [from 77 to 59 lowers the reaction rate six times; a 36-degree drop [from 77 to 41 produces a fortyfold decrease in the rate."

Calculate activation energy for the breakdown process based on the first estimate of the effect of temperature on rate.

Can anyone explain to me how to do this?

I am used to Word but my new laptop only has Works. When I want to insert more typing, my initial inclination is to place my I-bar in the proper location and type away. However, this causes me to type over stuff that I've already typed but still want in the document! I can't figure how to override this setting. Any ideas?

I want to upload my photos before I get a new computer. What do you think is best, in terms of simplicity and quality? Also it needs to be free.

I know this has nothing to do with music, but nobody answered over in computers and I know you all can do better!

I want to upload my photos before I get a new computer. What do you think is best, in terms of simplicity and quality?

Also it needs to be free.

What do you think is/are the best?

I'd also love it if you'd tell me a little about it!

I can download one more song today. Any suggestions? Best answer goes to the one I pick!

Anyone know this band? What do you think?

I'm looking for a pair of red strappy high heels to go with a short black dress. I'd appreciate links.

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Who do you want to come? Who do you think will be there?

Do you plan on attending? I am!!!

What do you know about them? Don't just tell me to listen to "Hair", please; I've heard it multiple times.

Why?

Why?

Mix cornstarch with water and paint paper with it. Let dry. Put iodine on palm and work up a sweat. Then press palm to paper. What will happen?