Biology

a case study on KarenSilkwood, highlighting the need for safety precautions in all nuclear environments.You will need to include;An introduction into radioactivity and the dangers of radioactive materials.A description of who Karen Silkwood was and what happened to her.A detailed description of the nuclear safety precautions used and explanations of how some of them work.A conclusion that stresses the importance of these safety precautions.

Please write about processed product  Topic: Disposable DiapersWhat is being done to making the product sustainable?  (Hint: Is there a company with a sustainability plan? Look for efforts on reusing, recycling, plans to replant if product components are renewable, etc.)Please use sources

Write a mini paper (cover page, abstract, 2-3 paragraphs of content, references) – in full APA format. Paper Topic – WHY IS DIVERSITY IMPORTANT? Paper must have a cover page, abstract, a short review of the literature with citations and a reference page.

write about your opinion on genetically modified food. What are the pros and cons. Give reasons for your case.

Individual Post (click reply at the bottom of these instructions)Below are two lists. One is a list of brain structures, the other a list of common activities. Pick three of the activities, and for each of the activities you choose, pick three of the brain structures, and explain how they might be involved in that activity.Activitieswatching a horror moviegiving a speechasking a question in classbeing caught speedingfixing yourself lunchdancingreading your textbookgoing to a concertriding a bikewriting an essayBrain structures/areasBroca’s areaamygdalacorpus callosumcerebellumhypothalamussympathetic nervous systemhippocampustemporal lobeparietal lobeoccipital lobethalamusWernicke’s areamedullasubstantia nigrafrontal loberight hemispherereticular formationleft hemispherePeer Response (click reply under your peer’s post to respond).  Respond to the posts of at least two other group members.For the three activities listed by your classmate, identify one additional brain structure that they did not list that is involved in that activity and explain how it is involved. If you feel your classmate made any mistakes in their post, help them out by indicating any errors or misunderstandings.

Why is the shape of a protein important? Describe the structure and shape of a protein. Be sure to include how primary, secondary, tertiary and quaternary structure influences shape.In an essay of no less than 150 words and no more than 250 words, explain  why  the shape of a protein important.  Describe the structure and shape of a protein. Be sure to include how primary, secondary, tertiary and quaternary structure influences shape.https://openstax.org/books/biology-2e/pages/1-introduction is my textbook, this information should be in chapters 2 and 3. Please have at least 2 citations.In this class, we will be using the Council of Science Editors (CSE) style for citations. please paraphrase everything.

These articles are about marijuana use and E-cigarettes or vaping. I am grouping nicotine E-cigerettes with marijuana use since they are a related issue about lung health. A person can choose to vape or smoke.Read one, a few, read them all… but if you post a comment, please reference which article you read and the question about it.1. Is vaping safer than smoking? (Links to an external site.)Links to an external site.2. Is the vaping industry being honest? (Links to an external site.)Links to an external site.(Links to an external site.)Links to an external site. (Links to an external site.)Links to an external site.Extra reads for your craving curiosity! I like this Facebook science blog, the author is great, she links credible sources. You can read this shorter page and click on the links in the article to read more:Is marijuana is bad for young brains? . She says what I want to point out, but the specific article isbellow.http://www.lung.org/stop-smoking/about-smoking/health-effects/marijuana-lung-health.html (Links to an external site.)Links toan external site.What are the health cost of smoking? Any kind of “smoke” or non-clean air into the lungs is not natural and thus not “healthy”. (Links to an external site.)Links to an external site.Here is a video:https://www.youtube.com/watch?v=3hwbxW7sRvk (Links to an external site.)Links to an external site.5. Your brain on Marijuanahttps://www.youtube.com/watch?v=oeF6rFN9org (Links to an external site.)Links to an external siteComment with your opinion, based on supporting evidence from one or more articles above, then comment on two other classmates’ posts.

DISCUSSION POST #1Initial Question: (Discuss how antibiotics can harm the body’s normal microbiome and examine how to replenish or increase the normal microbiome)Normal microbiomes live all over the human body–on skin, in gut, in orifices (nose) etc. These microbiomes are typically not harmful. Sometimes these microbiomes cause illness and disease for humans. To combat these diseases and restore the human to baseline health, many providers prescribe the use of antibiotics. The use of antibiotics, like penicillin, have saved many lives. Antibiotics decrease gut microbial diversity. However, the increased use of antibiotics have created antibiotic resistant infections. By stimulating the expression of the antibiotic resistance, there is an increase of resistance genes left in the microbiota, creating antibiotic resistant infections. “The use of antibiotics heavily disrupts the ecology of the human microbiome (i.e., the collection of cells, genes, and metabolites from the bacteria, eukaryotes, and viruses that inhabit the human body)” (Langdon et al., 2016). Studies have shown that antibiotics such as amoxicillin can cause shifts in the microbiome that can last from 30 days to 2 months. Antibiotics also affect different areas of the body differently. For example the throat recovers their initial microbial diversity after antibiotics quicker than other areas, like the intestines.For many years it has been thought that microbes are bad, and cleanliness is important to get rid of microbes. Research has shown that “we should balance our symbiotic microbial communities to protect us from pathogens and disease states” (Ursell et al., 2013, p.811). It is important to have a normal microbiome to protect us. One way to keep the normal microbiome is to not “go crazy” with cleanliness, like using purell all the time. Especially with children, it is important for them to build their normal microbiome. One of the first natural ways to acquire microbiome, is by a vaginal delivery. This is a natural route of inoculation, which studies have shown that after one month babies born by cesarean section had less microbiome(Ursell et al., 2013, p.814).One way to replenish normal microbiome is with probiotics. Probiotics are live microbes that, when ingested, have health-promoting effects. It is especially useful to take probiotics when taking antibiotics. Another method, in certain cases, is fecal transplants. “Fecal microbiome transplantations can be used for the treatment of recurrent Clostridium difficile infection” (Ursell et al., 2013, p.815). This type of treatment has been shown to help replenish the normal microbiome in the gut.

Biome and Ecosystem EssayPick a biome and ecosystem and create a essay addressing the following:Provide one example of a keystone species found in the biome/ecosystem.  Why is this keystone species important to the biome/ecosystem?  What defines it as a keystone species?Provide an example of an invasive species found in the biome/ecosystem.  What are some of the negative impacts this invasive species has on the ecosystem?  What is being done to mitigate impacts?Provide one example of an endangered species found in thebiome/ecosystem.  Briefly discuss the causes of the decline in the species and what is being done to help. Please include at least 3 academic sources and make sure all sources are cited in your essay.

The Coulter principle, or the principle of impedance, has been a long-standing method of counting cells.  Name three advantages and three disadvantages of this method, and offer a possible alternative to the disadvantages.  The alternative disadvantages can also include a discussion of alternative counting methodologies.