A An�lisis del experimento BeriBeriInstrucciones Lea el estudi.pdf

•

0 gostou•2 visualizações

A: Anlisis del experimento: BeriBeri Instrucciones : Lea el estudio de caso adjunto de BeriBeri y responda las preguntas a continuacin. Use su conocimiento del mtodo cientfico y qu hechos se requieren para que un estudio sea valioso y vlido. Coloque la letra de la respuesta correcta en los espacios proporcionados. El Problema : En 1887 una extraa enfermedad nerviosa atac a la gente de las Indias Orientales Holandesas. La enfermedad era el beriberi. Los sntomas de la enfermedad incluan debilidad y prdida de apetito y las vctimas a menudo moran de enfermedades del corazn. Los cientficos pensaron que la enfermedad podra ser causada por una bacteria. Inyectaron pollos con bacterias de la sangre de pacientes con beriberi. Los pollos inyectados se enfermaron. Sin embargo, tambin lo hizo un grupo de pollos a los que no se les inyect la bacteria. Uno de los cientficos, el Dr. Eljkman, not algo. Antes del experimento, todos los pollos haban comido arroz integral, pero durante el experimento, los pollos fueron alimentados con arroz pulido. El Dr. Elijkman investig este interesante caso y descubri que el arroz pulido careca de tiamina, una vitamina necesaria para una buena salud. 1.Cul fue la hiptesis? A. La deficiencia de tiamina caus la enfermedad. B. Beriberi fue causado por una bacteria. C. Los pollos pueden tener insuficiencia cardaca. D. La sangre realmente no estaba contaminada 2. Us el Dr. Elijkman un mtodo cientfico para demostrar que la tiamina causaba el beriberi? a. Si b. NO 3. Se debe aceptar o descartar la hiptesis original? A. Aceptado b. Rechazado 4. Cul fue el problema real? A. Determinar si la tiamina es importante. B. Cmo inyectar a los pollos C. Curado de los pollos D. Encontrar la causa del beriberi 5. Un experimento (y ste), debe ser una prueba de una hiptesis vlida. (VERDADERO O FALSO).

Educação

Mais conteúdo relacionado

Mais de ambikametalstores197

8.2 Murder Gregory O. Wilson, who had been arguing earlier in the day with his girlfriend, Melissa Spear, later set her on fire in her car and walked away. Spear was transported to a hospital with third- degree burns. She remained in a coma for 45 days but was transported home before dying there, nine months after the incident. The state of Ohio brought murder charges against Wilson. Wilson argued that he was not liable for murder because there was not sufficient causation between Wilsons act of setting Spear on fire and Spears death nine months later to warrant a conviction for murder. Is Wilson guilty of murder? State of Ohio v. Wilson, 2004 Ohio App. Lexis 2503 (Court of Appeals of Ohio, 2004).

8.2 MurderGregory O. Wilson, who had been arguing earlier in the d.pdf

ambikametalstores197

8. De las siguientes funciones, el prop�sito principal del ARN es .pdf

ambikametalstores197

8. Compare your observations and R values with those of your classmates. Identify sources of error in this investigation that might account for any differences. (2 marks) 9a. Is chlorophyll the dominant pigment in the spinach leaf? (1 mark) b. How can you tell? (1 mark) yes/no c. What other pigments were present? Why are they not visible except on chromatography paper? (2 marks) d. Why is it necessary to have variety of pigments in a leaf (1 mark) 10a. Why does the solvent travel up the chromatography paper? (1 mark) b. Explain why the pigments separate as the solvent moves up the paper? (1 mark) c. Which pigment is (a) most soluble and (b) least soluble in the solvent? Explain how you decided. (3 marks) 11. Leaves in Ontario change color in the fall. However, leaves in Florida do not change color in the fall. Why is this so? (Hint: Think of a difference between the two locations that might act as a trigger for leaves to change color in the fall.) 3 marks).

8. Compare your observations and R values with those of your class.pdf

ambikametalstores197

A conceptual action model for environmental water pollution is a useful tool for understanding the complex system of drivers, pollution sources, pathways, impacts, mitigation measures, and stakeholders involved in water pollution reduction efforts. By identifying these components and their interactions, it is possible to develop more effective strategies for addressing the problem of water pollution. Use the information below to Develop a (graphical) Conceptual Action Model / Systemigram for environmental water pollution. Drivers: These are the underlying causes or factors that lead to water pollution. They include industrial processes, agricultural practices, urbanization, transportation, natural events, and household practices. Pollution sources: These are the specific activities or practices that directly contribute to water pollution. They include industrial waste discharge, agricultural runoff, sewage disposal, stormwater runoff, oil spills, and littering. Pathways: These are the routes by which pollutants enter water bodies. They include surface runoff, direct discharge, atmospheric deposition, and groundwater infiltration. Impacts: These are the negative effects of water pollution on the environment, human health, and the economy. They include harm to aquatic life, degraded water quality, reduced recreational opportunities, and economic losses. Mitigation measures: These are the actions that can be taken to reduce or prevent water pollution. They include improved wastewater treatment, reduced use of hazardous chemicals, better agricultural practices, increased public awareness and education, and better regulatory enforcement. Monitoring and evaluation: This is the process of tracking progress in reducing water pollution and assessing the effectiveness of mitigation measures. It involves collecting data on water quality, monitoring pollution sources, and evaluating the success of mitigation measures. Stakeholders: These are the groups and individuals who have an interest in reducing water pollution. They include government agencies, industry groups, environmental organizations, and the general public. Effective collaboration and engagement of stakeholders is essential for successful water pollution reduction efforts..

A conceptual action model for environmental water pollution is a use.pdf

ambikametalstores197

8. a) (3 pts) In 1803 approximately 30 sheep were introduced to the island of Tasmania. After a period of exponential growth their population recruitment rate declined and their population continued to hover around 1.7 million individuals. After a disease outbreak caused by the bacterium Mycoplasma ovis, the population declined to 1.2 million. If the instantaneous rate of population increase during that year was 28,000 individuals, what is the sheeps intrinsic rate of natural increase?.

8. a) (3 pts) In 1803 approximately 30 sheep were introduced to the .pdf

ambikametalstores197

A company purchased merchandise for $4,000, on Feb 10, at the FOB sh.pdf

ambikametalstores197

A company manufactures, sells, and distributes a single product to i.pdf

ambikametalstores197

8,705 University of California students were surveyed in Spring 2015.pdf

ambikametalstores197

A company is planning to decrease the level of debt in their capital structure. Consider which of the following statements is/are correct. I.Unlevered Beta should be less than their current Beta. II. Re-levered Beta should be higher than the original Beta. III.Unlevered Beta should be unaffected by the level of debt. IV.Re-levered Beta should be lower than the original Beta. A. One is correct B. Two are correct C. Three are.

A company is planning to decrease the level of debt in their capital.pdf

ambikametalstores197

A company has the following assets in an asset group Land $225,000.pdf

ambikametalstores197

A company has the following assets in a CGU: Land: $125,000 Building: $450,000 Equipment: $50,000 Assume that due to a change in the political landscape, the CGU was written down to $550,000. However, at the next fiscal year end, the political landscape stabilizes and the recoverable amount is now $605,000. Assume the building had a 25-year useful life, and the equipment had a 10-year useful life. Required: Prepare the journal entry to record the impairment reversal.

A company has the following assets in a CGU Land $125,000 Building.pdf

ambikametalstores197

A collection of financial assets and securities is referred to as a portfolio. Most individuals and institutions invest in a portfolio, making portfolio risk analysis an integral part of the field of finance. Just like stand-alone assets and securities, portfolios are also exposed to risk. Portfolio risk refers to the possibility that an investment portfolio will not generate the investors expected rate of return. Analyzing portfolio risk and return involves the understanding of expected returns from a portfolio. Consider the following case: Andre is an amateur investor who holds a small portfolio consisting of only four stocks. The stock holdings in his portfolio are shown in the following table: Stock Percentage of Portfolio Expected Return Standard Deviation What is the expected return on Andres stock portfolio? 14.55% 7.28% 9.70% 13.10% Suppose each stock in Andres portfolio has a correlation coefficient of 0.4 ( = 0.4) with each of the other stocks. If the weighted average of the risk of the individual securities (as measured by their standard deviations) included in the partially diversified four-stock portfolio is 30%, the portfolios standard deviation (pp) most likely is 30%. Answers for the blank are Less than more than equal to Stock Percentage of Portfolio Expected Return Standard DeviationArtemis Inc.20%6.00%25.00%Babish & Co.30%14.00%29.00%Cornell Industries35%11.00%32.00%Danforth Motors15%3.00%34.00%.

A collection of financial assets and securities is referred to as a .pdf

ambikametalstores197

A communication link transmits binary characters, (0, 1). There is a probability p that a transmitted character will be received correctly by a receiver, which then transmits to another link, etc. If X0 is the initial character, and X1 is the character received after the first transmission, X2 after the second, etc., then ( Xn ) is a Markov chain. Find the one step transition matrix and the steady state probabilities..

A communication link transmits binary characters, (0, 1). There is a.pdf

ambikametalstores197

A client is admitted to the surgical intensive care unit following the removal of a large portion of the intestines due to a gunshot wound to the abdomen. The client begins to display signs of septic shock and a sepsis protocol is initiated. Which intervention is most important for the nurse to include in the plan of care? A. Keep head of bed raised 45 degrees. B. Maintain strict intake and output. C. Monitor blood glucose level. D. Assess warmth of extremities. iim stuck between B and D.

A client is admitted to the surgical intensive care unit following t.pdf

ambikametalstores197

A business model describes... Choose one or more answers. Group of a.pdf

ambikametalstores197

851560610.pdf

ambikametalstores197

9) The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is the somite will be converted almost entirely to muscle-forming cells the somite is incorporated into the neural tube the pre-somitic mesoderm will degenerate somites will form but fail to differentiate signals from the notochord will convert presumptive dermomyotome into sclerotome 10) True/False statements. Circle the appropriate answer. In the frog, germ layer fates are specified before gastrulation. T F Neural crest cells migrate out of the floorplate of the neural tube to contribute to the muscle, bone, and skin of the face. T F In the frog, vegetal cells are induced to become mesoderm. T F The mid-blastula transition is when the majority of zygotic transcription begins. T F In vertebrates, Hox proteins regulate somite number and identity. T F Please help!!!.

9) The effect of grafting an extra piece of notochord into a dorsal .pdf

ambikametalstores197

A bowl of noodles is placed at the center of the table along with five chopsticks for each of the philosophers. To eat a philosopher needs both their right and a left chopstick. A philosopher can only eat if both immediate left and right chopsticks of the philosopher is available. In case if both immediate left and right chopsticks of the philosopher are not available then the philosopher puts down their (either left or right) chopstick and starts thinking again..

A bowl of noodles is placed at the center of the table along with fi.pdf

ambikametalstores197

Mais de ambikametalstores197 (18)