4. The rate with which enzymes can transform a substrate varies from enzyme to enzyme, and sometimes substrate to substrate. a) How are competitive and uncompetitive reversible inhibition similar? How is their effect on rate different? b) Enzyme reaction rates drop off dramatically as temperatures pass 50 °C or so, and do not return to their previous rate when cooled. Explain the drop off in activity and the lack of return to the previously higher reaction rates after heating. c) Pepsin is an enzyme that participates in digestion in the stomach, whereas trypsin is an enzyme that participates in digestion in the small inestines. Pepsin has the highest turnover number at around pH 2, whereas trypsin has the highest turnover number around pH 8. Explain this difference.

You are given 1.0 mL of the enzyme amylase and add cold 95% ethanol to reach a final concentration of 30% ethanol. What volume of the 95% ethanol did you need to add to the enzyme solution to obtain this concentration? (*note: this one is a little tricky—you will need to account for the starting volume of the enzyme solution.)

1. A bank has DA = 2.5 years, DL= 0.80 years, and k = 92%. Assets are equal to $1,200 million. According to the duration gap model, find the change in the direction and magnitude of interest rate that would make the institution insolvent if rates are currently 5 percent?

please answer in excel format

ch 18 # 2

Four identical metal spheres have charges of q_A = -8.0 μC, q_B=-2.0 μC, q_C=+5.0 μC, and q_D=+12.0 μC.

(a) Two of the spheres are brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 μC?
Choose the answer for part (a) from the menu in accordance to the question statement                                                          C and DB and DB and CA and BA and DA and C

(b) In a similar manner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 μC?
Choose the answer for part (b) from the menu in accordance to the question statement                                                          A+C+DB+C+DA+B+CA+B+D

(c) The final charge on each of the three separated spheres in part (b) is +3.0 μC. How many electrons would have to be added to one of these spheres to make it electrically neutral?

N = Number

The purpose of this assignment is to learn how to apply the t-test to a sample dataset.

For this assignment, students will use IBM SPSS Statistics and the "Example Dataset."

Using the "Example Dataset" and SPSS, apply the t-test to assess the following statement: "Men and women have different incomes in this city."

Show your calculations and copy of the SPSS output in a Word document.

In a separate 250-500 Word document, address the following questions:

1. Describe what t-test is the most appropriate and explain why. Discuss whether you used a one-tailed or two-tailed test and explain why.
2. Using SPSS, calculate the t-test and provide the test statistic and critical value assuming an alpha of .05.
3. Calculate the effect size using r².
4. Interpret the results by (a) stating the reason the study or test was done, (b) presenting the main results, (c) explaining what the results mean, and (d) making suggestions for future research.

The data for an Enzyme with a Kcat is 5,000m-1. This experiment was performed by adding a given amount of substrate of 100 micrograms of enzyme in buffer solution. What is the molecular weight of the enzyme?

An enzyme contains an active site aspartic acid with a pka=5.0 which acts as a general acid catalyst. Draw the curve of enzyme activity vs. pH for the enzyme (assume the protein is stably folded between pH 2-12 and that the active site Asp is the only ionizable residue involved in catalysis).Explain the shape of the curve

Describe what is happening during glycolysis. Make sure you include all compounds made and in the correct order.

A strict anaerobe can gain its energy from:

Chemolithotropy

anaerobic respiration

glycolysis

fermentation

all are correct

1. Which of the following stages of cellular respiration makes the most ATP?

   		glycolysis
   		citric acid cycle
   		oxidative phosphorylation