1. An antibody can bind to a coronavirus receptor with a k_offand k_on rate of 10^-5s^-1and 10⁴M^-1s^-1, respectively. If there are 10 µM total receptors and 50 µM free antibody, what concentration of coronavirus receptors are bound with antibody? What percent of receptors are bound?
2. The coronavirus mutated its receptor which changes the dissociation rate k_off to 1 s^-1for the antibody. How does this change the percent of receptors bounds?
3. How long does the antibody stay bound to the wildtype receptors vs. the mutated receptors?

1. How were the cell cultures prepared to make it easier for them to absorb the plasmid? What is required to perform this procedure?
2. If the genetically transformed bacteria have acquired the ability to live in the presence of ampicillin, then what can you assume happened with the other genes on the plasmid?
3. Consider your predictions about Plates 3 and 4
4. 1. What factor made the difference in which plate glowed under UV light?
5. 2. Why do you think it would benefit an organism to be able to control the use of genes in response to changes in the environment

Consider a galvanic cell based on the following two half reactions at 298 K: SRP Fe3+ + e-  Fe2+ 0.77 V Cu2+ + 2 e-  Cu 0.34 V How many of the following changes will increase the potential of the cell? Why?

1. Increasing the concentration of Fe+3 ions

2. Increasing the concentration of Cu2+ ions

3. Removing equal volumes of water in both half reactions through evaporation

4. Increasing the concentration of Fe2+ ions

5. Adding a NO3 - solution to the anode portion of the cell

A sample of 4.63 mol of xenon is confined at low pressure in a volume at a temperature of 51 °C. Describe quantitatively the effects of each of the following changes on the pressure, the average kinetic energy per molecule in the gas, and the root-mean-square speed.

(a) The temperature is decreased to -66 °C.
(b) The volume is halved.
(c) The amount of xenon is increased to 6.02 mol.

Give each answer as a decimal factor of the form: new value = factor old value.   A factor of 1 means no change.

A solution of Na2CO3 is added dropwise to a solution that contains 1.14×10−2mol L−1 Fe^2+ and 1.54×10−2mol L−1 Cd2+. What concentration of  CO3^2− is need to initiate precipitation? Neglect any volume changes during the addition.

The solubility-product constant, Ksp, at 25 ∘C for two compounds [iron(II) carbonate, FeCO3, and cadmium(II) carbonate, CdCO3] are given by the table

A bicycle rider is interested in the effects of temperature on air density. A change in temperature will also affect the tire pressure.

a) Write a computer program that calculates air density at atmospheric pressure for temperatures from -10?C to 50?C.

b) Assume that a bicycle tire is inflated to an absolute pressure of 450 kPa at 20?C. Assume also that the volume of the tire does not change with temperature. Write a program to show how the tire pressure changes with the temperature in the same range, -10?C to 50?C.

Prepare a table or graph or both.

What does readiness to change mean, and what does it look like? When I worked in a large consulting firm, we had a specific step in our change process that was entitled "change readiness". But this step was akin to the "communicate" and "act" stages in the EP model. In reality, an organization that is "change ready" has incorporated the change mindset, skills and tools into its culture so that changes become part of how the company moves forward. In this type of scenario, resistance may be less entrenched.

Your thoughts?

2. Unemployment

a. During a recession, labor demand falls and job search will likely produce fewer offers with a given amount of search, as well as lower quality offers. How should this affect the workers reservation wage?

b. How (and why) would an increase in the generosity of unemployment insurance benefits affect workers reservation wages and expected unemployment durations?

c. If a firm pays its workers efficiency wages how will the premium it has to pay its workers to motivate them change as the unemployment rate changes?

A bicycle rider is interested in the effects of temperature on air density. A change in temperature will also affect the tire pressure.

a) Write a computer program that calculates air density at atmospheric pressure for temperatures from -10?C to 50?C.

b) Assume that a bicycle tire is inflated to an absolute pressure of 450 kPa at 20?C. Assume also that the volume of the tire does not change with temperature. Write a program to show how the tire pressure changes with the temperature in the same range, -10?C to 50?C.

Prepare a table or graph or both.