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

what is the clear mechanism of the action of glucagon in glycolysis and gluconeogenesis? such as phosphorylation/dephosphorylation, transcriptional control....

they can be explained?

thanks

Describe, in general terms, what occurs in glycolysis (including energy investments, energy yields and carbon inputs/outputs)

Describe how sugar is catabolized to pyruvate via glycolysis. Explain how these catabolic reactions generate ATP and NADH.