Biology

OverviewIn the last week, we talk and discuss the macromolecules, and you identify the uses of some of them, the befits, and the side effects of its overconsumption. Perhaps, not all the time we are aware that indirectly we are over consuming some of these substances (steroids and hormones).DirectionsRead the next articles:1. The hormones and steroid in our food (Links to an external site.) https://www.caasn.com/ultimate-truth-about-hormones-antibiotics-in-foods.html2. Regulations of labeling food by USA (Links to an external site.)https://www.fda.gov/drugs/drug-safety-and-availability/fda-approves-new-changes-testosterone-labeling-regarding-risks-associated-abuse-and-dependenceA. Go to the refrigerator and pantry room, and check the food that you consume over the week. In the label, you will find if the product contains or not hormonesWrite a short paragraph (minimum 350 words) where you debate the use of hormones and steroids to grow the food that we eat. In your paragraph include if you think the published concerns are true or not.B. Then provide two example on how your classmates can use the concepts learned in this class in their lives . Minimum of 100 words per example in your reply.

What do you consider mysterious about the development of humans and our society? How might the work of scientists help to uncover facts to understand this mystery?

Please watch the two videos provided in the links below.For each video1)answer the question at the end using ONLY the information in the video.2) write 6 facts from the video you found interesting/ or would like to learn more abouthttps://stjohnsu.instructuremedia.com/embed/32d71159-c5c6-40b4-a659-ab45d172e887https://stjohnsu.instructuremedia.com/embed/549434a3-9350-44e6-a2b5-a85ef1cf8633

Discussion: Pesticide and Antibiotic ResistanceViral diseases, such as HIV, SARS, and Ebola strike fear in the hearts and minds of those who understand the nature of these illnesses. Every year, people throughout the world visit medical clinics to receive vaccinations to protect them from seasonal influenza, another kind of virus. Deadly viruses and bacterial infections are among the evolving enemies to which the title of Chapter 11 in your course text refers. How do these enemies evolve? What makes them especially dangerous?For the Discussion, you learn about the evolving enemies known as pesticide and antibiotic resistance and propose a strategy for addressing one specific resistance example.To prepare for this Discussion:•    Think about the title of Chapter 12: “An Evolving Enemy” and consider this question: To what enemies does the title refer, and how did they evolve?•    As you review Chapter 12, also focus on the following:o    What the term resistance meanso    How resistance is related to natural selectiono    The impact that different forms of resistance may have on human health•    You may consider your personal knowledge or experience regarding pesticide or antibiotic resistance. For example, you may be aware of a news story about a troublesome insect that is difficultto control with pesticides. Or, you may be aware of a friend or acquaintance that contracted an infection that did not respond well to antibiotics. You may draw upon your knowledge and experience to narrow your search for a topic for this Assignment.•    Conduct additional research, focusing on either pesticide or antibiotic resistance. Choose one particular example of resistance to address in the Discussion. This week’s OptionalResources suggest websites where you could start your search.•    Based on what you have learned about resistance and on the information you have gathered during your research, consider strategies that could address the resistance.http://www.nationalgeographic.com/http://www.sciencemag.org/http://www.scientificamerican.com/http://www.sciencedaily.com/Post a proposal (at least two paragraphs long) for a strategy to address the antibiotic or pesticide resistance you selected. Your proposal should include the following:•    A brief description of the resistance•    A brief explanation of when and how the resistance occurred•    A description of the impact of the resistance on human health•    A strategy to address the impact of the resistance, including reasons why this strategy would be useful•    References to at least two sources outside the Required Resources•    All references cited in APA format

biological psychology essay 1000 words, harvard referincing style

write about reproductive isolation and the 3 typesEssay assignment guidelines:For this assignment, be sure that you follow the standards of academic writing. The assignment consists of a 1-page essay about a topic of your choice based on the lectures covered in midterm 2 (lectures 11-17). Your essay will require a brief introduction, a concise and focused claim about the topic selected, two to three main points you will address, solid reasoning, and textual evidence along with an explanation of its significance. Worth: 2 point bonus towards Midterm 2 overall grade (out of 15 points).Requirement: Single-spaced. Times New Roman 12-point font. All citations will be MLA parenthetical citation. Include an additional “References” page.Citing sources: correct and complete citation of sources is vital. Failure to properly cite your sources amounts to plagiarism. For example, in-text citations should look like this:

Instructions for the BYS 318 Vertebrate ReproductionThe assignment centers on an analysis of a recent article from the journal Science, “Rapid speciation via the evolution of pre-mating isolation in the Iberá Seedeater” by Turbek et al. The article is available in the Files tab of Canvas. Notice that the structure of this article places Materials and Methods at the end. It is not necessary to read the M&M closely (we’re not concerned about the details of analyzing genomes), but you should pay attention to reported Results and generally why. I would expect that to fully discuss the findings of this research in context will require about 2000 words.The title of the article tells you what this assignment is about: the evolution and maintenance of pre-mating isolation in a bird. Your assignment is to describe how this pre-mating isolation functions and may have originated, and compare these mechanisms to what we’ve read about this semester. The authors examine the evolutionary and behavioral relationship of two very similar species of bird from Argentina. You must consider and compare the authors’ conclusions to findings by authors with other animals in readings in this class this semester. In particular, you should consider:• Assortative mating;• Various possible aspects of sexual selection such as male plumage, song, territoriality (this includes evidence for color patterns in light wavelengths not visible to humans);• Significance of the pattern of extra pair copulations found;• Chromosomal linkage of sexual selection related genes, especially on the Z chromosome;• The significance of genetic similarities and differences between the two species, and genomic techniques used;• Why might the above observations create reproductive isolation, even those these two species are syntopic (have completely overlapping ranges and habitat usage)?In short, I’m asking you to write a comparative synthesis of evidence presented on the seedeaters compared to work and concepts we’ve read about this semester. This could be along the lines of, how would think Badyaev and Qvarnstrom would interpret these findings, how does this work compare to the findings of Tuttle with white throated sparrows, would the findings about sex linkage in poeciliid fishes be relevant or informative to this research, does the paper on complex phenotypes in salmon by Thompson et al. inform Turbek et al.’s findings. You can and probably should reference ideas by theoreticians as Fish and Trivers to place the article findings in correct context.Jargon:SNP, single-nucleotide polymorphism: A difference of nucleotide found at a specific sequence position in DNA, useful for characterizing relatedness and evolutionary divergence.PCA, principal components analysis. A commonly used statistical technique for ordination – with a data set about different individuals or species, how do you rank their similarity or difference.FST, the fixation index (FST) is a measure of population differentiation due to genetic structure. It is frequently estimated from genetic polymorphism data, such as single-nucleotide polymorphisms (SNP) or microsatellites. It’s reported on a scale from 0 to 1, with a value of 0 meaning total mixing, and a value of 1 meaning total separation.

Use sentences. answers should be clear and easy tounderstand.Make sure you are actually addressing the question asked. Simply stating ‘facts’ is notthe same as “distinguishing”, “illustrating”, “explaining”, “comparing”, and so on.• For example, “How does histone acetylation around promoter regions increasegene transcription?” is NOT adequately answered by “histone acetylation lessensthe positive charge of the histone so DNA cannot wrap around them as tightly”.While the given answer is true, it does not link the wrapping of DNA aroundhistones with transcription rates, and therefore, does not fully answer thequestion.For each question the maximum answer length is 300 words.

Discussion: Human Impact on the Carbon CycleAs the winter holidays near, you hear several neighborhood children complain about the lack of snow in your area. You realize it has been a bit warmer this season. In fact, as you think about the weather a bit longer, you realize you did not have much snow last year, either. Is this what scientists are talking about when they refer to global warming?Global warming is a popular topic in today’s media. In spite of this wealth of information, it may be difficult to understand what global warming is, the science that explains it, and itsimpact on the survival of living organisms on the Earth.For both this week’s Discussion and Assignment, you have the opportunity to gain a better understanding of global warming and its relationship to the carbon cycle on which all living things depend. For this week’s Discussion, you explore global warming’s correlation with CO2 (carbon dioxide) levels in the Earth’s atmosphere and evaluate how your own activities, as well as human activity, in general, influence the carbon cycle.To prepare for this Discussion:•    Review Chapter 5, “Life in the Greenhouse” in Biology: Science for Life, and focus on the following:o    What the greenhouse effect iso    How water, heat, and temperature are relatedo    What CO2 is and how its amount in the atmosphere is changingo    How CO2 levels correlate with global warming•    Consider how your personal actions may increase or decrease CO2 levels by calculating your carbon footprint. Links to severalcarbon footprint calculators are listed in the Required Resources section. Use one of these calculators to estimate your carbon footprint.https://www.conservation.org/carbon-footprint-calculator?gclid=CO_pm7OH4awCFUdn5Qod6Hjxpg#/•    Learn about the atmospheric history of CO2 by reading the article “Past Climate Change” listed in the Required Resources section.https://www.epa.gov/climate-change-science/causes-climate-change•    Conduct additional research to learn more about the relationship between human carbon footprints and CO2 levels in the atmosphere.With these thoughts in mind:Post two or more paragraphs that evaluate whether your carbon footprint impacts the carbon cycle. In this Discussion, be sure you:•    Explain how your carbon footprint relates to the carbon cycle, the atmospheric history of CO2, and a national or global average•    State whether you think decreasing your carbon footprint can impact the carbon cycleo    If you agree, suggest two ways you can decrease your carbon footprint and explain how these suggestions will helpo    If you disagree, provide at least two reasons for your position•    Include references to at least two sources outside the Required Resources•    Cite all references in APA format

Cardiovascular Disorders AssignmentChoose one of the following conditions below providing the following information:• Causes• Symptoms• How it is diagnosed• Risk factors• Treatment and PrognosisMake sure to cite your source and use a reliable source to get your information. Upload into Dropbox by Tuesday, April 6, 2021. It is worth 25 points.I. Hypertension: Additionally, include values for prehypertension, stage 1 and stage 2, as well as a healthy range.II. Atherosclerosis: Additionally, define HDL and LDL and give the healthy values.III. Congestive heart failure: Additionally, explain right and left-sided heart failure.IV. Coronary artery disease: Additionally, explain the condition angina.V. Problems with the electrical conduction system of the heart