Category: Science homework help

Powerpoint on any African American Scientist
Bio
Invention and its importance 
Graphic
No Presenter notes needed and only 4 slides

Read the following instructions attached within the document. Please meet word count. Absolutely no plagiarizing! This assignment is due on 02/28/24. Thanks so much in advance.  

Read the following instructions attached within the document. Please meet word count. Absolutely no plagiarizing! This assignment is due on 02/27/24. Thanks so much in advance.  

Wine making report. 
The report should be 2-3 pages, single-spaced, and typed in Times New Roman or Arial, with a font size of 12. Tables and/or graphs are encouraged to be included in your report but should be no more than two. Your report should contain. make sure you add the standard curve graph and anything else the assignment is asking for. absolutely no plagiarism. follow the instructions exactly. 

–  Abstract (Brief description of the report in 4-5 lines)
–  Introduction
–  Purpose of the experiment
–  Methodology and procedures
–  Findings/observations
–  Conclusions

 3. Please describe your experience in disease control including case investigations, contact tracing, clinical services, and case management. What challenges have you encountered or anticipate in epidemiological investigations, and how did you address, or do you propose to address these challenges?  

Listed below are the assignment instructions. This is part II which includes the original elements from the original assignment. The bid is $20 and the due date is 14 Dec.
Assignment Content
For your final assignment, you will create a research paper that includes elements of your Unit III Literature Review as well as the remaining parts of the research that are combined into one assignment. You should have a separate title page and reference page. Consider the following format when compiling your final paper:
Title page
Introduction/background of your topic (include theory in this section)
Based on your previous literature review (completed in Unit III), identify and describe what the research question(s) were that the investigators were studying
Literature review (incorporate your writing from Unit III with the two articles you reviewed)
Describe if there were any ethical issues that the researchers identified based on their health care study
Explain the practical means used to ensure the integrity of the research being conducted
Evaluate the research design/methodology that was used in the two articles
Include and discuss the survey questions and instrument used in both studies
Conclusion
Reference page
The conclusion section should include responses to the following questions:
What do you hope to learn from your research findings?
How will you communicate the findings?
What will you do with the information that you communicate? Will you start a public health program? Will you start providing education?
In 500 words minimum, summarize the entire project.
The final paper should be 7 to 10 pages in length (not including the title page or reference page). Please remember that the paper should be in APA format and contain in-text citations.

Read one (1) article per week from professional journals, newspaper, internet, magazines on the following topics.  Present your findings/report in a typed summary in APA format.  It should include the following information:  bibliographical information (author, title of article, name of professional journal, date, page(s) student name and date).  Reference the “Article Summary Template” in the Rubrics subheading section for the format of your summary.
The topic for this report is listed below                                                                                                                    
Healthcare Costs, Access, and Quality;  Future of Health, Services   Delivery;  Regional   Extension Centers; Population Health, WHO projects/initiatives;   mobile devices in healthcare ‘./
The topic for this report is listed below and is different                                                                                                       
Presentation on Healthcare Technology, Cloud Computing, Big Data (De-Identification & Sharing); Data Governance

  
1. According to the authors, what was the rationale for conducting this study?
2. Type of Research: Part I: Is this study quantitative or qualitative research?
3. Type of Research: Part II: What characteristics of the article led to your decision of either qualitative or quantitative. Discuss the method, sample size, and data analysis to support your decision.
Steele-Moses, S.K., Creel, E.L., & Carruth, A.K. (2018). Recruitment attributes important to new nurse graduates employed on adult medical-surgical units. Journal of the Academy of Medical-Surgical Nurses, 27(5),310-328.

  
Cells and Animal Sizes and Shapes: Surface Area (SA), Volume (V) and SA:V Ratios
Metabolism: Get It In, Move It Out
I. Introduction:
Most cells have size range from 5 µm to 10 µm (5-10 micrometers, microns). The largest body cell is the egg (100 μm) and the smallest is the red blood cell (4-5 μm). Cells come in 4 general shapes: 1) Squamous (flattened, like thick cardboard) (L ≥ W > H) 2) Cuboidal (cube-ish) (Side, S, all equal) 3) Columnar (like upright columns) (L > W ≥ H) and 
4) Spherical (like marbles). These shapes are approximations because most cells lack perfect geometry or symmetry.
Cells must be able to bring in the nutrients (ex. proteins, sugars, ions, O2) across their membranes and send out (across the membrane) their metabolic waste products (ex. CO2, ammonia, NH3). Therefore, there is a limit as to how large a cell can be, because the volume of a cell is a cubic function (V = S3) but the area of a cell is a squared function 
(A = S2). So, as a cells gets larger its volume grows proportionally greater than its area, and their SA to V ratio decreases, which means they cannot get nutrients in fast enough, or move waste out fast enough, to accommodate a very large volume, and mass.
The rate of metabolism is a function of a cell’s volume and mass (larger cells require more to function). But the rate of material exchange across the membrane is a function of its surface area (membranes with greater SA can move materials in and out of a cell faster). So, as cells get larger, they need more to function, but their membrane SA proportionally is smaller and they risk dying (for lack of input of nutrients, or output of wastes). Therefore, cells can only be so large, and they will undergo mitosis (divide to make a daughter cell) in order to have the necessary SA : V ratio.
In anatomy and physiology, the SA to V ratio is directly seen in the design and structure of tissues and organs that have high rates (big demands) on processing large volumes of energy, nutrients and materials. Wherever, there is this high demand the SA:V ratio is high because a lot of materials need to be processed and moved into, or out of cells, tissues and organs.
In marine biology, SA:V ratio is seen in the structure of larger animals, with complex organ systems. Protozoans have no specialized organs for breathing, digestion and excretion because their high SA:V ratio allows them to get in, and out, of the body all required nutrients by diffusion alone. Many simple multicellular animals (ex. sponges, flat worms, jelly fish) also don’t have specialized organ systems because they too have high SA:V ratios. But, as animals get larger, thicker and higher volume, their SA:V ratio decreases and diffusion alone cannot get in, and out, the nutrients they need. So, these phyla (ex. arthropods and vertebrates) have specialized organ systems to get in, and out, their nutrients.
II. Purpose: A) To calculate SA and V quantities for various cell shapes and the SA : V ratio B) To understand and apply the concept of SA : V ratios in various physiological processes and anatomical structures.
III. Equations:
A. For squamous-shaped cells: SA = 2 (L x W) + 4 (W x H) V = L x W x H
B. For columnar-shaped cells: SA = 4 (L x W) + 2 (W x H) V = L x W x H
C. For cuboidal-shaped cells: SA = 6 x S2 V = S3
D. For spherical-shaped cells (π = 3.14), r = radius: SA = 4 x π x r2 V = 1.33 x π x r3
IV. Data Tables:
A. Squamous-shaped Cells (L ≥ W > H)
  
L (μm)
5
10
15
20
5
5
10
 
W (μm)
1
1
1
1
2
2
2
 
H (μm)
1
1
1
1
1
2
1
 
SA (μm2)
 
V (μm3)
 
SA : V (0.1) 
B. Columnar-shaped Cells (H > L = W)
  
L (μm)
5
7.5
10
12.5
15
 
W (μm)
2
2
2
4
4
 
H (μm)
2
2
2
4
4
 
SA (μm2)
 
V (μm3)
 
SA : V (0.1)
C. Cuboid-shaped Cells
  
S (μm)
5
10
15
20
 
SA (μm2)
 
V (μm3)
 
SA : V (0.1)
D. Spherical-shaped Cells
  
r (μm)
5
10
15
20
 
SA (μm2)
 
V (μm3)
 
SA : V (0.1)
V. Conclusion Questions
1. Watch this video: https://www.youtube.com/watch?v=huKUJsqik2I
Summarize in a couple of sentences what you learned.
2. Why is the sphere the worst shape for SA : V ratio (minimum SA : V ratio)? (search Google, and look at Table D)
3. Watch this video: https://www.youtube.com/watch?v=CNkP4rycLbI
A) What did the Agar Cube demonstration show (in terms of SA : V ratios and rate of absorption)?
B) Why do Elephants have such big ears (what does it facilitate)?
C) Why do Flatworms not need specialized organs (ex. heart and lungs) for gas and nutrient exchange?
D) How does being huge allow Whales not to lose too much heat in cold ocean waters?
E) What is a behavioral adaptation that humans do with their arms when it gets cold?
F) What did the agar-cube (cut with ridges) show about SA : V ratios, and how it modeled a villi?
4. Watch this video: https://www.youtube.com/watch?v=wuXSEOKNxN8
A) What did the 2 paper tube demonstration show you? (ex. which dimension creates greater volume, bigger radius or length)?
B) How does Allen’s Rule explain why Eskimos living by the N pole are shorter and rounder, while Africans living by the equator are taller and thinner (in terms of heat exchange and SA : V ratios).

What, if anything, is the line that human beings should not cross in their attempt to transcend their natural limitations?