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michele gimeno

michele g.

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Common nucleophiles that will undergo this reaction include alkoxides, nitriles, thiols, carbanions, acetylides, Grignard reagents and lithium aluminum hydride. Which is not a product that can be formed from epoxide ring opening? О носн, сн, он 0 HOCH, CH, C=N 0 сн, сн, сн, он

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Why may delayed reinforcement be more effective for humans than for non-human animals? Human beings have the capacity to be reinforced by many different types of rewards, while animals can only be reinforced by the immediate presentation of food. It is impossible to answer this because conducting research with non-human animals is considered unethical. Human beings can be told that the delayed reinforcement was for a specific action, while animals cannot. Human beings have the brain structures to accept that reinforcements are linked to behaviors, while animals cannot understand this no matter when they are presented.

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3. Electric Field (25 points). Particle A has charge +5 nC, while particle B has charge -8 nC. Particle A is fixed on the x-axis, particle B is fixed at a corner of a square, and point P is at the origin as shown in the figure. The distance d= 0.5 m. Same situation as page 2. Where convenient, it is fine to re-use values already calculated on page 2, without repeating the work. Just label such values: "from page 2" a) Determine the x and y components of the electric field, E, at point P. Use k = 1/(4πεο) = 9 × 10° N m²/C2 for convenience. (10 points) b) What is the magnitude of E at point P? (4 points) c) What is the direction θ of the electric field, E, at point P, expressed as a canonical angle from-180° to 180° as measured from the +x axis? (4 points) d) Draw the electric field vectors on the diagram at the right at point P due to particle A, particle B, and both together. Draw lengths and directions roughly to scale and label each vector. (7 points) d PO d B d A

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While exploring a small volcanic island off the coast of Hawaii, researchers encounter a never-before-seen population of lizards. They observe that individuals in this population are unable to leave the island, and no new lizards from the mainland can reach this island. They also observe that female lizards only accept mates who bring them a food offering. After one lizard generation, the researchers return to the island and calculate that the average toe-pad size, an important trait for the lizards' ability to climb trees and rocks, has not changed from parent to offspring. When they compare the DNA sequences of two parent lizards to the sequence of one of their offspring, they find that there are 20 base pairs in the offspring's DNA that do not match either parents' DNA sequence. Which assumptions of the Hardy-Weinberg model do the researchers observe this population violate? (more than one correct answer possible) ? No mutations are occurring ?Fully random mating No migration into/out of the population ? No natural selection acting on the population

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Part III: Synthesis 5. Propose an efficient synthetic route, along with the intermediates, for the following transformations: ? a.

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A thermodynamically unfavorable reaction can become favorable when coupled to a highly ____ reaction. Endergonic Ionic Neutral Exergonic

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According to the drug and pharmacy legislation, what is the difference between a private pharmacy and a public pharmacy?

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The human species, despite its intelligence and talent for problem-solving (which, remember, started to evolve way back in Homo habilis, as a response to rapidly cycling wet/dry climate shifts), has managed over the millennia to turn one of its most basic survival mechanisms–the “fight or flight” stress response–against itself. What are some common physical side-effects of stress? Circle all that apply: Diabetes & heart disease High blood pressure Gastrointestinal disorders (~IBS) Weight loss & muscle toning Decreased immune response Memory loss & depression Weight gain in the stomach area Reduced blood pressure Stomach Ulcers Shortened telomeres & aging 2. Evolutionarily, what is the purpose of stress? Why don’t zebras get sick from stress like humans do (Sapolsky’s book is called “Why Zebras Don’t Get Ulcers”) 3. At the most basic physiological level, our stress response is driven by what? a. the hormones adrenalin/epinephrine and glucocorticoid b. degrading neural connections in the front cortex c. a drop in red blood cells d. an onslaught of white blood cells 4. The question below is one you saw in the beginning of the semester when we read the article “PTSD Beyond the Battlefield.” It’s relevant here too: Stress, anxiety, & depression are evolutionary adaptations necessary to responding to danger. Which statements below are accurate characterizations? Circle all that apply: Stress triggers the flight or fight response (preferable to getting eaten!) Depression keeps you from being too active and putting yourself at too much risk Mental health has drastically improved thanks to modern technology & multi-tasking Stress, such as anxiety and depression, has been naturally selected for over time 5. True or False: For both baboons and humans, individuals lower down in the social hierarchy (the have nots) suffer more stress, and consequently more stress-related health problems, than those higher in the social hierarchy (the haves)? 6. What was the “Dutch Hunger Winter” and how were people who were conceived and born during this time affected by it later as adults? 7. The first time I watched this it ironically stressed me out. But there is some good news. What does the video argue are some ways to deal with psychological stress? This video is from 2008. I really like the info in it (and who isn’t entertained by Sapolsky’s hair?), but I’m wondering if it’s too old... KEEP or DITCH it next semester?

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Write the partial fraction decomposition of the following rational expression. (-7x-14)/((x-2)^(2)) Write the partial fraction decomposition of the following rational expression -7x-14 (x -2)2

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Texts: (B) Find the value of the test statistic. [ Select ] ["5.05", "5.55", "6.11", "4.17", "4.59"] (C) Find the p-value. [ Select ] [".0108", ".0582", ".0412", ".0223", ".0371"] (D) What is the conclusion? (reject or do not reject), why? MscoroTYourPla. Situation B: A researcher wants to know whether the satisfaction level of satellite TV customers depends on the company that provides their service. He selected a random sample of 60 satellite TV customers and classified them according to their service provider (Dish Network or Direct TV) and their level of satisfaction (satisfied or not satisfied). The table below gives the number of people in each category. Using the .05 significance level, conduct a test to determine whether satisfaction and service provider are dependent or independent. Counts of Customers by Category Dish Direct Total Satisfied 36 44 80 Not satisfied 4 16 20 Total 40 100 Question B1: Formulate the hypotheses for the test. Ho: Satisfaction and service provider are independent. HA: Satisfaction and service provider are dependent.

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