what is the best the best kind of media (agar or broth medium) to use for identification of the following bacteria:

1. Staphylococcus aureus
2. Escherichia coli
3. Streptococcus pneumoniae

Examples of possible media choices may include: TSA, TSIA, MSA, MacConkey, Blood Agar, EMB, SIM, MR-VP, etc.

Also, provide reasoning behind each selection. Also list if each of the media used are selective and/or differential. What observable changes would you expect to see from the media after a proper incubation period with each bacterial species?

Water is both a powerful force and critical to an organism’s survival. Explain how this can be true of water, by providing a detailed example of each situation (including the chemistry aspect as needed).

There is a wide variety of survival strategies used by terrestrial organisms. Explain the difference between ectotherms and endotherms, and an example organism for each.

Many organisms live in environments that experience large changes, giving them seasons. Explain the differences between diapause, hibernation, and torpor. Provide a single organism example for each of the three terms and why that species must use this strategy.

A department store wishes to examine the reasons why customers switch to competing department stores. It extracts the list of all credit card transactions that happened during last month and selected every tenth name. These customers were subsequently contacted for a detailed survey. Comment on the sampling designs and suggest changes/improvements, if needed.

An administrator of an independent hospital wants to find out if single parents working in the hospital have a higher rate of absenteeism than parents who are not single. Identify:

Relevant population

Sampling frame

Sampling technique

Sample size

Sources of data

Describe in detail the baroreceptor reflex. Be sure to name and describe all the contributing components, their locations, their specific roles in the reflex. Then give an example of a situation in which blood pressure would suddenly fall and explain how the baroreceptor reflex operates to maintain blood pressure homeostasis. Then give an example of a situation in which blood pressure would suddenly rise and explain how the baroreceptor reflex operates to maintain blood pressure homeostasis. (it’s easiest to choose simple examples like body position changes lying to standing, standing to lying down).

In a test of the effectiveness of garlic for lowering​ cholesterol, 50 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes ​(beforeminus​after) in their levels of LDL cholesterol​ (in mg/dL) have a mean of 3.7 and a standard deviation of 16.6. Construct a 99​% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL​ cholesterol? What is the confidence interval estimate of the population mean mu​?

Order these steps: When light reaches the rods of vertebrates there is a change in the membrane potential from – 40 mV to – 70 mV. As a result of this hyperpolarization of the photoreceptor, the associated bipolar and ganglion cells fire action potentials. Place these events in order of their occurrence by placing a 1. next to the first event, 2. next ……and, finally a 5. next to the last event.

____Retinal changes from cis to trans configuration

____Bipolar cell no longer inhibited

____Activation of G protein called transducin which decreases amount of cGMP

____Sodium channels close

____Decreased glutamate release

Rita is the owner of Rita’s Osteria. She wants to study the growth of her business using simulation. She is interested in simulating the number of customers and the amount ordered by customers each month. She feels that the number of customers is normally distributed, with a mean of 800 and a standard deviation of 45. The bill for each customer is $65 and uniformly distributed, with a maximum increase of 8% and a minimum decrease of 5%. The changes of the bills are incremental, i.e. each change is based off the average bill of the previous month. Formulate a simulation, computing the mean total revenue and the standard deviation in one year.

We are evaluating a project that costs $843,617, has an eight-year life, and has no salvage value. Assume that depreciation is straight-line to zero over the life of the project. Sales are projected at 56,500 units per year. Price per unit is $41, variable cost per unit is $17, and fixed costs are $417,515 per year. The tax rate is 35%, and we require a return of 22% on this project.

In percentage terms, what is the sensitivity of NPV to changes in the units sold projection?

(Round answer to 2 decimal places. Do not round intermediate calculations)

1. Extreme challenges to an animal’s physiology allow us to explore and better understand the function of systems in the body.   Please address the following questions regarding the initial reflexive changes (before acclimatization) that occur in response to ascent to altitude.

1. Outline the initial global reflexes that occur in response to the low PO₂ at high altitude. Be sure to include all components of the reflex arcs for cardiovascular and respiratory systems.

1. Compare these global reflexes to local reflexes occurring in the lungs.

How do the global and local reflexes address the optimization of the ventilation : perfusion ratio (keeping it close to 1)

Do you believe it is inevitable that employees will respond to change within the workplace with feelings of fear?

·        If you respond yes, then suggest actions managers can take to mitigate these fearful responses.

·        If your answer is no, then describe the actions taken by companies that prevent these fearful responses.

Share any life experiences you may have seen regarding how well or how poorly companies implemented major changes in the workplace. Why were they effective or ineffective? What can be done to improve the workplace in terms of managing fear that employees may feel at times?