describe how action potentials are generates, how they propagete along axons (both myelinated and unmyelinated ), and how the membrans of the axon returns to restimg potential.

During a relaxed walking pace, an animal's leg can be thought of as a physical pendulum of length L that pivots about the hip.

(a) What is the relaxed walking frequency for a cat (L = 30 cm), dog (60 cm), human (1 m), giraffe (2 m), and a mythological titan (10 m)?

(b) Derive an equation that gives the walking speed (amount of ground covered per unit time) for a given walking frequency f.

[Hint: Start by drawing a picture of the leg position at the start of the swing (leg back) and the end of the swing (leg forward) and assume a comfortable angle of about 30° between these two positions. To how many steps does a complete period of the pendulum correspond?]

(c) Find the walking speed for each of the animals listed in part (a).

TESU has discovered a new fictitious compound called Edistatin, a Low-Chol, they believe has promising pharmacologic benefit. A patent was granted for the compound, and all of the required animal testing was submitted to the FDA with the IND application. The FDA gave approval to proceed with human testing. Construct a one-page summary of what you think should be the required studies Phase I, II, and III to submit in the NDA. For each phase, include the objective of the study (studies), type of subjects selected, outcomes measures (i.e. cholesterol reduction and safety), and results. Be creative!! There are no right or wrong answers. We are interested in your approach based upon your readings.

Background: Assume that the effective dose is 10 and 20 mg. The safety profile is that of other statin products such as Lipitor, etc.

Okay, we know entrepreneurs take risks... risks for the sake of profit.  Clearly, business owners do their best to get the best (highest) return on investment.  This comes in the form of profits (money), employee recruiting efforts, employee retention strategies, training/coaching, and overall business development.  All of this requires money and business owners need to decide the most efficient allocations of their financial and human capital resources.

Discuss how a business can measure and manage its financial resources.  What are the primary distinctions between the following financial analysis tools?  Discuss each item along with how and when a business would use these reports.  Profit & Loss Statement (Income Statement)Balance SheetStatement of Cash Flow

Be sure to include at least 2 practical examples to support your thoughts and ideas.

An Egyptian mummy is discovered in which the amount of Carbon-14 present is only about twenty-nine fiftieths the amount found in living human beings. a. Using the half-life of Carbon-14, determine the decay constant for Carbon-14 (answer in decimal form and scientific notation, accurate to the tenth decimal place)? b. About how long ago did the Egyptian die? c. If this is a royal tomb, which Pharaoh is in the sarcophagus? Which dynasty and regnal years are recorded for this Pharaoh? In addition to showing the calculations that lead to your solution, write a synopsis of the tactic(s) you used to arrive at your solution(s) to this series of questions. Use clear and concise sentence structure and grammar. Your answer should be labelled with appropriate units and reflect the context used in this question.

A 34 year old female with HIV comes to the office due to the appearance of multiple tender nodules on her lower extremities over the past several weeks. The patient tried to squeeze open the lesions, but this led to profuse bleeding with no expression of pus. She works at a pet store in Mississippi and has regular contact with a variety of animals. Skin examination findings are shown below. Biopsy of the lesions reveals large endothelial cells forming vascular channels with a mixed neutrophilic and lymphocytic infiltrate. Immunohistochemical staining for human herpesvirus 8 is negative. On Warthin-Starry Stain there are gram negative bacteria. Infection with which of the following pathogens is most likely responsible for the patient's skin condition?

Group of answer choices

Bartonella henselae

Pseudomonas aeruginosa

Yersinia pestis

Yersinia enterocolitica

Topic: Productivity cost and contingent market valuation.

Suppose the faith-based organization has three leaders: - a 52 year old, African American male physician in private practice who also holds a PhD; - a 29 year old Native American female lawyer also holds and MBA and who works for a large firm that specializes in medical malpractice claims; and - a 38 year old, Caucasian male with an MA in art history who works as cook at a local restaurant.

Suppose that each of them uses their free time to be a group leader at the faith- based organization. Each person spends three hours a week as a group leader.

Question: How might a researcher following a more traditional human capital approach put a value on each person’s time?

A study was conducted to determine whether the drug AZT was effective in preventing serious opportunistic infection among individuals infected with human immunodeficiency virus (HIV). Individuals who were HIV-positive were randomly selected to either receive AZT treatment or a placebo (Non drug) treatment. Among the 145 individuals who received AZT, 24 developed serious opportunistic infections. Among the 137 individuals who were not treated with AZT, 45 developed serious opportunistic infections.

Complete the 2x2 table for these data.

1. What type of study is this? How do you know? Be specific.

2. What is the measure of association for this study type?

3. Calculate the association between AZT treatment and the development of opportunistic infections.

Explain what this measure of association means.

A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a

0.05

significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to​ agree, or is there a substantial​ difference?

human activity natural patterns don't know

men 320 156 39

female 336 142 37

compute test statistic and critical value

What is the conclusion based on the hypothesis​ test?

▼

Upper H 0

.

There

▼

is

is not

sufficient evidence to warrant rejection of the claim that the sex of the respondent is independent of the choice for the cause of global warming. Men and women

▼

appear

do not appear

to agree.