Biology

In the mid-1950s, the first study linking cigarette smoking to lung cancer was published. In the decades that followed, many other studies supported this finding and a host of other health-related effects attributed to smoking were uncovered. Over the last few decades, cities and states have created local regulations prohibiting smoking in certain public places. In 2009, the U.S. Food and Drug Administration was given regulatory authority of all tobacco products. Chapter 20 of your textbook begins with a comparison of two sources of inhalable nicotine: traditional tobacco cigarettes and E-cigarettes. Because E-cigarettes are a relatively new technology, less is known about the long-term effects of the firsthand and secondhand inhalation of vaping products. However, in recent years they have been treated and regulated similarly to traditional cigarettes.  Your assignment for this unit is to create a 10- to 12-slide PowerPoint presentation that covers the following elements: the anatomy and physiology of respiration (e.g., explain how breathing works); the effects of the inhalation of smoke and E-cigarette vapor on gas exchange in the lungs; specific diseases associated with smoking, both pulmonary and cardiovascular; and lastly, based on what you know about E-cigarettes from the reading and your own research, defend or oppose the regulation of vaping products as traditional cigarettes. You will need to cite and reference at least one article from the CSU Library databases as one of your sources of information. CSU Library Database Instructions Open the CSU Online Library link in your student portal. Under “discovery search,” click the tab for “articles.”” In the keyword search field, type keyword “vaping” and/or “E-cigarette” to find articles that cover this topic. You may get different results doing separate searches for each keyword. The keywords “electronic cigarette” may also be used. From the list of available articles that comes up, select one that interests you. Click on the article link, then click on “PDF full text or HTML full text,” and read the article. (Note: Not all articles will provide the full text; if your choice does not, you will have to select a different article.) Discuss what you learned from your chosen articles in 1-2 slides in your presentation. Cite the article according to APA guidelines, and list it on your references slide. PowerPoint slides should not contain a lot of text; use speaker notes to provide the details of your presentation. The general practice is to use no more than 5-6 bullet points per slide. The quality and depth of your speaker’s notes will be significantly factored into your grade. Title and reference slides should be included. These do not count toward the 10- to 12-slide requirement. In addition to providing references on a reference slide, you need to cite your material in the slides as appropriate; use APA format for your references and citations. Suggestions for Searching for Illustrations Use at least 3 images in the presentation. When looking for illustrations to use, it is suggested that you type the subject into a search engine and click “images.” For your presentation, you are allowed to copy and paste images (being sure to cite and reference them). However, you are NOT allowed to copy and paste content, such as text, tables, and the like. As much as possible, your presentation needs to be in your own words.  PowerPoint Guidance Do you need to refresh your knowledge concerning PowerPoint? Review this tutorial on PowerPoint Basics. Click on the Notes tab on the right side of the tutorial screen to see a transcript of the PowerPoint webinar. You can also search online for information concerning best practices about what should and should not be done when creating a PowerPoint presentation. Notes: As directed in the tutorial above, pay attention to the background and font colors in your presentation—try to avoid using plain black text on a white background, but also avoid using colors that are visually difficult to see (such as yellow text on a light background) or that are unpleasant (such as red text on a yellow background). Strive for a pleasing, visually appealing appearance. Reminder: The speaker notes should provide the detail and discussion of your presentation, and everything in the presentation should be in your own words, not copied and pasted from a source

In this discussion, you will explore the consequences of steroid abuse and identify the symptoms a potential patient may present with in the healthcare field. Research the steroid hormone Nandrolone in peer-reviewed medical journals found on the  Biology research guide. This site provides guidance on finding biology resources and citing sources. The site also identifies specific databases that are particularly useful for the field of biology. In your initial post, discuss the consequences, signs and symptoms, and physiological changes that Nandrolone causes. Speculate on the mechanism of how Nandrolone causes feminization of males and masculinization of females. How could the same drug cause sex reversal? 3 paragraphs

Genetically Modified Organisms (GMOs) are a hot button of controversy throughout the world. Crop plants and animals with modified genomes are offered as ways of saving humanity from famine, but raise worries about creating monsters that may have unforeseen effects. Find and read/view internet materials about GMOs, and then write about the following questions: 1. What are the benefits and risks of GMOs? What regulations, if any, should apply to them? 2. Should there be limits on research on GMOs? Why or why not?

READ EVERYTHING BELOW BEFORE GOING TO THE SIMULATION Go to the website: https://learn.concord.org/eresources/102.run_resource_htmlLinks to an external site. and follow the instructions. As you read, answer the questions that are on each screen (you can see the questions below too), record your answers on the following:  Answer Sheet is the PDF Which of the following is an example of ecology? Which of the following questions interests you the most? From 1960-1963, the population of lions in the crater decreased. Which of the following is most likely to have been true from 1960-1963? What would have to be true, on average, from 1952-1956? What do you predict will happen to the lion population after 1963? a. Explain. b. Draw your prediction on the graph to the right, starting from 1964. (Take a screenshot of your drawing and insert into your document). Can you predict what the growth curve might look like over 12 hours? Draw your prediction on the graph to the right. (Take a screenshot of your drawing and insert into your document). In which hour are the bacteria growing the fastest? Pick a point in that hour. Look at the lion population from 1963 to 1975. Do you think this rate of growth will continue to increase? Who or why not? Using the picture to the right to get started, brainstorm a list of at least three limiting factors that might affect the lion population in the crate. Click a point on the graph where you think competition for space was low for the bacteria Use the graph to draw your prediction about the lion population from 1980 to 2012. (Take a screenshot of your drawing and insert into your document). Draw a line to estimate the carrying capacity of the petri dish. (Take a screenshot of your drawing and insert into your document). Draw a line to estimate the average carrying capacity of the environment prior to the disease outbreak (affecting lions) that took place in the early 1960s. (Take a screenshot of your drawing and insert into your document). Using what you now know about carrying capacity, redraw a new prediction of the lion population after 1963. (Take a screenshot of your drawing and insert into your document). Compare your prediction to the real data. What do you notice? If there are differences, can you suggest some causes? Which of the following is a density-independent limiting factor that could cause fluctuations in the carrying capacity between 1995 and today? Given the shape of these graphs, do you think Earth’s population will reach carrying capacity? What might be some limiting factors? What do you think will happen if we do reach carrying capacity? Choose one of the following to answer: What factors can influence how populations change over time? What is the difference between exponential and logistic growth? How can we apply population models to real world data? What inferences can we make about the human population?

Briefly identify and discuss bones of the pectoral and pelvic girdles as well as their attached limbs associated with skeleton models found in your text. Briefly identify and discuss the categories of joints found in humans, and compare their overall structure and mobility features. Write your responses in a minimum of 250 words in APA format.

Introduction section of a thesis dissertation. Main topic of the thesis is disorder in protein structures.  Four main sections:  1) structure-function paradigm  2) Structural determinants of protein disorder and functions related to disordered proteins 3) Structural transitions of disordered proteins

Principles of Biochemistry Please construct a “virtual” poster with all the pathways we have discussed from glycolysis to the beta-oxidation of fatty acids depicted inside a cell.  You do not need to include every single reaction but you should include those which are regulated, those that produce or consume energy (ATP, NADH, NADPH), and those at branch points between pathways. For your own benefit, you may want to include a separate list of regulated enzymes and what regulates them.  Please include in your diagram intracellular membranes and locate reactions in the appropriate subcellular location.  Try to include each metabolite only once per subcellular location. Transporters are well worth including. Generating these may be done in PowerPoint using boxes around the metabolites, arrows to indicate reactions, and key enzymes within circles.  Please appreciate that if it appears that all or part of the map is copied and pasted from a resource, no credit will be given.  The making of the map is intended to provide a “synthesizing” experience where connections among pathways and the influence of cellular compartments are better appreciated.  Ideally, this would be done on paper but that is not an option this term. – Please recreate, from scratch, your metabolic map to be similar to the example I posted.  This large diagram should have metabolism in the context of a model cell including the plasma membrane, ER membrane, and a very large mitochondrion with its two membranes.  All pathways from glycolysis through beta-oxidation should be included.  Each metabolite should be written only once in each cellular compartment.  Transporters embedded in the various membranes should be shown.   Please do not skip steps such as glucose > glycogen.  Instead, the steps of glucose > glucose -6-P > glucose 1-P + UTP > PPi + UDP – glucose > glycogen should be included.

It’s basically a journal article review. Here is the link that I chose. https://www.nejm.org/doi/full/10.1056/NEJMoa2007016?query=featured_coronavirus Please reach out to me if you encounter any concerns.  Here are the assignment instructions. In this assignment, students will review a microbial journal article. Choose one article from a primary scientific literature source that uses a microbe as a model organism/system and write a comprehensive summary of the study that answers the following questions: Write a summary of the study that includes: Why did the scientists perform the study (i.e., description of background)? What was the hypothesis (or hypotheses) under investigation? What were the major results and did they support or negate the hypothesis? Which key techniques were used to achieve these results? Why are the results significant and do they point to further/future studies? In other words, why does this article matter, and what should or could be done next? Why did you choose this particular article to review? Was it interesting, informative, clearly written, or none of the above? Compose your review in current APA Style and include: A title page  Answers to the questions above in paragraph format (2 or more pages) A reference page with the reference for your article and any other sources used in your review.

Write an essay of 250 words on one of the following topics. Use internet sources to find relevant information: 2. Do you think the United States Government’s Food and Drug Administration (FDA) should approve the sale for human food of genetically modified Atlantic salmon, which contain a gene from Pacific Chinook salmon that causes them to grow more quickly? What are reasons in favor and against approval of such GM food?

In this laboratory exercise, you will learn how various sources of fuels are formed. You will also assemble a calorimeter and measure the heat released from two different fuel sources. You will learn about the different types of fuels, combustion reactions, and differences between the energy content in fuel sources. Complete all sections of the Energy Comparison of Fuels laboratory exercise, in your Environmental Science Lab Kit from Hands-On Labs, Inc. Fill out all parts of the worksheet. It will not be necessary to submit your original worksheet for this assignment. In a Word document, discuss all parts of this lab activity. Your essay should include the answers to all the worksheet questions. Do not include the original questions. Your answers should be presented in flowing paragraph form. Be sure to include all data tables and graphs from this activity in your paper. Your paper should meet the following requirements: Be 3-4 pages in length (excluding tables, graphs, and other visuals, title page, or references list) Include 1-2 outside sources