Q1: hydrolysis of an ester using a Lipase CALB enzyme.
1. Use an organic chemistry textbook to draw the mechanism of hydrolysis of the corresponding non enzymatic reaction- ester hydrolysis using acid/base catalysis. Enzymatic reactions often involve general acid or general base catalysis rather than such specific acid or specific base catalysis. explain what this means.
3. With as much detail as you can identify the catalytic residues involved in each step, and discuss their involvement in the catalytic mechanism for each of the steps involved (acid, base, covalent catalysis). Propose how the starting material and tetrahedral intermediates/transition states could be bound via non-covalent interactions to other residues at the active site and hence any influence from them.
In: Chemistry
|
Calculated R Value (L-atm/mol - K) |
Standard Deviation: | |
| Group 1 | 0.1021 | 0.001 |
| Group 2 | 0.0626 | 0.012 |
| Group 3 | 0.0831 | 0.010 |
| Group 4 | 0.0811 | 0.020 |
1. Provide a brief explanation of accuracy and precision. Be sure you use your own words.
2. Which group was the most accurate? Explain your reasoning.
3. Which group had the best precision? Explain your reasoning.
4. Which group had the most consistent experimental results from the three trials? Explain your reasoning.
5. One of these 4 groups had a small gas leak in their experimental setup. Which one do you think it was? Be sure you analyze the experimental results and think about how a gas leak would effect their data.
In: Chemistry
Define credit rating of a company and of long-term securities (bonds, shares etc.)
A. List down credit rating agencies in US.
B. Pick one credit crediting agency and explain in detail the services offered by that agency.
C. Explain criteria for assigning credit rating to the companies.
In: Finance
| Stumps | Larvae |
| 2 | 10 |
| 2 | 30 |
| 1 | 12 |
| 3 | 24 |
| 3 | 36 |
| 4 | 40 |
| 3 | 43 |
| 1 | 11 |
| 2 | 27 |
| 5 | 56 |
| 1 | 18 |
| 3 | 40 |
| 2 | 25 |
| 1 | 8 |
| 2 | 21 |
| 2 | 14 |
| 1 | 16 |
| 1 | 6 |
| 4 | 54 |
| 1 | 9 |
| 2 | 13 |
| 1 | 14 |
| 4 | 50 |
- How far off are you from the actual number of Beetle larvae from
a cottonwood tree with 5 stumps?
- Does it make sense to use a linear regression model
here? Write a short paragraph about your analysis and carefully
state your case. You should provide at least 2 specific reasons why
this is or is not a good technique to use to predict the number of
clusters of beetle larvae.
- Does it make sense to predict the number of clusters of beetle
larvae if there are zero stumps? Why or why not? What happens when
you do this calculation?
| SUMMARY OUTPUT | |||||||||
| Regression Statistics | |||||||||
| Multiple R | 0.916048 | ||||||||
| R Square | 0.839144 | ||||||||
| Adjusted R Square | 0.831484 | ||||||||
| Standard Error | 6.419386 | ||||||||
| Observations | 23 | ||||||||
In: Statistics and Probability
Writing Assignment - Part I
Choose an example of a Change in Accounting principles. Write a statement paper on how this change would affect the financial statements of a company as they adopt the new principle. Prepare this written statement as if to the Board of Directors of your company.
Writing Assignment - Part II
Your CEO has inquired about the differences between the direct method and the indirect method of presenting the statement of cash flows. Prepare a memo describing the differences and the reasons one presentation may be better than the other for particular companies. Be sure to include a discussion on the non-cash activities included under the operating activities section of the indirect method
In: Accounting
In: Economics
Consider the following schema:
Suppliers(sid: integer, sname: string, address: string)
Parts(pid: integer, pname: string, color: string)
Catalog(sid: integer, pid: integer, cost: real)
The key fields are underlined, and the domain of each field is listed after the field name. Therefore sid is the key for Suppliers, pid is the key for Parts, and sid and pid together form the key for Catalog. The Catalog relation lists the prices charged for parts by Suppliers.
WRITE THE FOLLOWING QUERIES IN RELATIONAL ALGEBRA WITH BASIC OPERATORS AND AGGREGATE FUNCTIONS ONLY
MEANS IF THE QUERIES CANNOT FULLY EXPRESSED BY BASIC OPERATORS, USE AGGREGATES.
1. Find the names of suppliers who supply some red part.
2. Find the sids of suppliers who supply some red or green part.
3. Find the sids of suppliers who supply some red part or are at 221 Packer Street.
4. Find the sids of suppliers who supply some red part and some green part.
5. Find the sids of suppliers who supply every part.
6. Find the sids of suppliers who supply every red part.
7. Find the sids of suppliers who supply every red or green part.
8. Find the sids of suppliers who supply every red part or supply every green part.
9. Find pairs of sids such that the supplier with the first sid charges more for some part than the supplier with the second sid.
10. Find the pids of parts supplied by at least two different suppliers.
11. Find the pids of the most expensive parts supplied by suppliers named Yosemite Sham.
12. Find the pids of parts supplied by every supplier at less than $200. (If any supplier either does not supply the part or charges more than $200 for it, the part is not selected.)
In: Computer Science
A really big accountancy firm are thinking about a significant direct investment into Australia in 2021 but they are unsure about what legal form to use. You are a tax consultant and they have asked you to explain, in a memo, the relative strengths and weakness of the tax regime for partnerships and companies. They know the non-tax law implications of adopting one of other form but they have come to you specifically to understand the relative merits of the tax system in relation to each option.
In: Accounting
What does it mean to say that a particular result is statistically significant at the .05 level or at the .01 level? Is a result that is statistically significant at the .05 level automatically also significant at the .01 level? What about the reverse? Please explain your reasoning.
In: Math
Construct the current assets section of the balance sheet from the following data. (Use cash as a plug figure after computing the other values.) (Use a 360-day year. Do not round intermediate calculations.) Yearly sales (credit) $ 371,000 Inventory turnover 7 times Current liabilities $ 62,000 Current ratio 2 Average collection period 36 days
Current assets:
cash:
Account receivable:
inventory:
total current assets:
In: Finance