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Resolution by the compound light microscope is limited by the two key factors…

Question Resolution by the compound light microscope is limited by the two key factors… Group of answer choicesmass and density of the objecttransparency and illumination of the objectvisible wavelengths of light and numerical aperture of the objective lenssize of the condenser lens and brightness of the light source

The World Health Organization has declared a Coronavirus pandemic. During this pandemic several novel bacterial pathogens have evolved that are

The World Health Organization has declared a Coronavirus pandemic. During this pandemic several novel bacterial pathogens have evolved that are causing opportunistic intestinal and respiratory infections.  As a microbiologist for the CDC, develop a response plan to determine the identity of the unknown organisms.  Use verbiage that you have learned this semester in lecture and lab.  First you need to choose either the respiratory or intestinal bacterial pathogen to identify.  This step is important as it determines which tests are most appropriate to identify the organism. Describe, using specific laboratory terminology, how you would go about collecting samples from the patients and obtaining a pure culture.  Remember sterile technique and be specific. You will need to grow your bacteria on a nutrient agar plate and in a nutrient agar broth to observe the growth.  Explain three pieces of information that you can obtain from observing the growth of bacteria on solid and liquid agar.  What could you expect to find based on the fact that the pathogen is either respiratory or intestinal? Choose seven laboratory tests (stains and/or biochemical tests) that you would perform and specifically explain why you would perform those tests (describe for what the test is testing and how that will help you to determine the identity of the organisms). When you choose your laboratory tests really think about what information is most important in the determination of the identity of your organisms.  Any experimental performed during the entire semester can be used.  The test that you choose must be one that was covered in class during the semester. You will need to write this information in a paper. You can include charts, graphs and pictures if you would like, but it is not necessary. Your paper must be uploaded into Canvas by 11:59 pm on April 8.  You will upload the document in the unknown module and it is worth 20 points.  Your grade will be determined by the following:  Did you choose either a respiratory or intestinal pathogen Did you correctly explain a technique that will allow collection of an uncontaminated specimen Did you explain three separate aspects of bacterial growth that can be seen from broth and solid agar growth Did you choose seven different tests  Did you choose tests that are appropriate for the type of organism (respiratory vs. intestinal) chosen Did you explain the purpose of the tests that were chosen

multiple choice questions:—– 1.Which of the following are correct assumptions regarding cladistics:

Question multiple choice questions:—– 1.Which of the following are correct assumptions regarding cladistics: Group of answer choicesLiving things are related by descent from a common ancestor.Speciation occurs by splits of one species into two species, never more than two at a time and at one point in time.Characteristics change enough over time to be considered in a different state.If a character is found in all members of a clade it is a shared ancestral character.All of the above are true2.A phylogenetic tree:Group of answer choicesillustrates a pathway of evolutional history.possesses leaves of analogous structures.possesses roots of derived structures.always illustrates the relationships among all living organisms.demonstrates molecular pathways of evolution.3.Which of the following organisms belongs in the same class as humans?Group of answer choicesmushroomdandelionrobindoghousefly

The human a -tropomyosin gene is alternatively spliced to produce different forms of a-tropomyosin

BiologyQuestion The human a -tropomyosin gene is alternatively spliced to produce different forms of a-tropomyosin mRNA in different cell types (Figure Q6- 3 ). For all forms ofthe mRNA, the protein sequences encoded by exon 1 arethe same, as are the protein sequences encoded by exon10. Exons 2 and 3 are alternative exons used in differentmRNAs, as are exons 7 and 8. Which of the following statementsabout exons 2 and 3 is the most accurate? Is thatstatement also the most accurate one for exons 7 and 8?Explain your answers.A. Exons 2 and 3 must have the same number ofnucleotides.B. Exons 2 and 3 must each contain an integral numberof codons (that is, the number of nucleotides dividedby 3 must be an integer).C. Exons 2 and 3 must each contain a number ofnucleotides that when divided by 3 leaves the sameremainder (that is, 0, 1, or 2).

In the process of domesticating a wild plant, there is unavoidably

Question In the process of domesticating a wild plant, there is unavoidably a shift from a wild plant pathosystem to a crop pathosystem, as a result of efforts to increase crop quality and productivity. This requires a number of changes from the wild plant pathosystem. These changes result in an increase in disease levels in the crop pathosystem. Discuss these changes and in your discussion highlight how each has affected disease development.

1. List the three molecules that make-up a nucleotide. 2

Question 1. List the three molecules that make-up a nucleotide. Question 2 2. Which molecule is produced by transcription? Question 33. Which nitrogen base is used in only RNA? Question 44. Which DNA nucleotide links to adenine (A), and which links to guanine (G)? Question 55. What type of enzyme can be used to cut DNA into fragments?Question 66. Describe a use of DNA gel electrophoresis.Question 77. Why is DNA important? Question 88. How many copies of DNA are found in each strawberry cell? Question 99. Which end of the gel should be close to the negative pole (black) in the electrophoresis chamber? Question 1010. Do some online research to name and describe a genetic disease. Has the location on a particular chromosome(s) been identified? If so, which one?

multiple choice questions:– 1.The smallest level of group organization of organisms is a(an):

Question multiple choice questions:– 1.The smallest level of group organization of organisms is a(an): Group of answer choicesorganism.community.population.Eecosystem.biosphere.2.The appropriate principle function of an ecologist is to:Group of answer choicescontrol the natural world.describe the natural world.defend newly discovered species in the natural world.acquire funding to support conservation of endangered species.exert political pressure for conservation of economically useful species.3.The maximum population density of a given species that a geographical area can sustain over time is called the:Group of answer choicesintrinsic rate of increase.population cycle.generation time.carrying capacity.environmental resistance.4.Typically, K-selected species:Group of answer choicesare adapted to stable, predictable environments.exist at population levels close to their carrying capacity.produce fewer and larger offspring.provide greater parental care for offspring.All of the above are true.5.A forest fire is an example of __________ population regulation.Group of answer choicesdensity-dependentdensity-independentr selectedbiotic potentiallogistical growth6.The key measurement used by demographers to predict human population change in a country is:Group of answer choicesthe age structure diagram of that country.the life table of that country.the history of human population increase since 10,000 BC.per capita resource use in that country.the total fertility rate for that country.7.Answer question 7 using the following information. The average number of children per woman in the period 1960 to 1965 for the following six countries was: Azerbaijan: 5.6, Brazil: 6.2, China: 5.7, Mauritius: 5.7, Thailand: 6.4 and Tunisia: 7.3. The average number of children per woman in the period 2000 to 2005 for the same six countries was: Azerbaijan: 2.1, Brazil: 2.2, China: 1.8, Mauritius: 2.0, Thailand: 1.9 and Tunisia: 2.0. Which country showed the largest drop in fertility rate from the five years ending in 1965 to the five years ending in 2005?Group of answer choicesAzerbaijanBrazilChinaThailandTunisia8.Which of the following are not characteristics of community ecology?Group of answer choicespredator-prey relationshipsmimicrycommensualismdensity-independent regulationspecies richness9.Which of the following is NOT correctly associated with the competitive exclusion principle?Group of answer choicesparasitism of one species on another specieslimited resources within a habitatmultiple species accessing the same resourcesTwo species cannot occupying the same niche.evolution leading to a reduction in the use of a common resource between two species10.A country with zero human population growth is likely to be:Group of answer choicesin Africa.in Asia.an economically developed country.an economically underdeveloped country.lie along the equator.

You are a detective for the Vancouver Police Department in the year

Question You are a detective for the Vancouver Police Department in the year 2025. You are at the scene of a crime where a criminal single-handedly robbed a casino, then shot and killed 3 men working at the casino. Although there were eye witnesses to the crime, the robber was wearing gloves, oversized coveralls, and a mask that covered his/her entire head. No one is able to give any kind of a description of the perpetrator. Luckily, being the ingenious detective that you are, you find a little spot of the criminal’s blood on a shard of glass where he/she cut themself as he/she made his/her escape through a broken window. You take the blood to the lab so tests can be run. Fortunately, thanks to years of research, scientists have now figured out which genes in DNA code for every human characteristic. The sample of blood from the crime scene was quite small and the lab was only able to isolate a small amount of DNA. Forensic scientists will have to amplify the amount of DNA available to be sure there is enough to test. Research the method used by forensic scientists to accomplish this task and identify the steps involved as well as a description of each step.

Suppose a certain species of insect lives in the lush green canopy

Question Suppose a certain species of insect lives in the lush green canopy of the rain forest. Some of the insects are bright green in color, and some are bright yellow. Assume there is a natural predator of the insect in the area. What do you expect to happen to the populations of the green and the yellow insects over time?

Jaundice is a medical condition in which the skin, sclera of the eyes,

Question Jaundice is a medical condition in which the skin, sclera of the eyes, and mucous membranes turn yellow as a result of excessively high levels of bilirubin (hyperbilirubinemia). -Describe the spatial relationship of the four lobes of the liver using anatomical directional terms. -Explain how blood and bile flow in opposite directions in a hepatic lobule. -Provide one possible anatomical explanation and one possible physiological explanation for hyperbilirubinemia.

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