21st century science biology/physics case study

Here is an exemplar case study for you to look at. It looks at the question: 'Is more sunlight exposure the solution to rising amounts of vitamin D deficient related diseases and cancers?'

The good bits in the case study are highlighted, and it can give you an idea of how to present your case study.

HideShow resource information
  • Created by: Magdalne
  • Created on: 07-06-11 18:52
Preview of 21st century science biology/physics case study

First 391 words of the document:

Exemplar Case Study
This is an example of an excellent case study. In the real case study we would expect the
actual newspaper / magazine cuttings to be included in the final report. However, due to
copyright permissions they have not been included in this exemplar material.
Case studies do not have to be in the form of a written report. Alternative reports could
be in the form of newspaper articles, PowerPoint presentations, posters of booklets.
Please see the twenty first century science `Case Study' marking criteria.
Strand A: Quality, selection and use of information
Relevant sources have been chosen and their reliability discussed. Some examples of
this have been highlighted in pink. The bibliography on page 13 contains full details of
the sources including URLs, names of articles, authors, publications and dates. When
discussing evidence and opinions about vitamin D, direct quotations are used with their
references sited in the text. See pages 4,7,8.
Strand B: Quality of understanding of the case
The relevant scientific information is included in a concise way on pages 36, 911. The
views expressed by different scientists throughout the study are linked to the science.
Some examples of this have been highlighted in green. The ideas are constantly being
evaluated.
Strand C: Quality of conclusions
Pages 7 and 8, clearly look at the evidence behind the opinions about vitamin D and
disease. Both sides of the argument about sun exposure have been commented upon in
detail and page 10 outlines the science behind sun exposure. The table on page 11 lists
the advantages and disadvantages of sun exposure. It is recognised that there may be a
number of different variables involved as seen on page 9. When both sides of the
argument have been considered, several possible conclusions are presented on page
12, before a final conclusion is reached.
Strand D: Quality of presentation
The report is well structured. The contents page allows the reader to see at a glance
what is in the report. The bibliography lists details of all the sources.
Tables and diagrams are used effectively to illustrate the test and help convey scientific
information.
Spelling, punctuation and grammar is of a high stand throughout the case study.
0324sunlightexposure 1

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Is More Sunlight Exposure the
Solution to Rising Amounts
of Vitamin D Deficient Related
Diseases and Cancers?
0324sunlightexposure 2…read more

Page 3

Preview of page 3

Here's a taster:

Is Sunlight Exposure the solution to rising amounts of Vitamin D
deficient related diseases and cancers?
Contents Page No
Introduction 2
All about Sunlight and Vitamin D production 3
What is Vitamin D and what disease can Vitamin D protect against? 4
How can sunlight reduce the Risk of Cancer and diseases? 6
What is the evidence and opinions about whether Vitamin D actually prevents
these diseases? 7
If these diseases are multifactorial what other things can help reduce the risk
of them? 9
What…read more

Page 4

Preview of page 4

Here's a taster:

Introduction
For years scientists have been encouraging us to cover up when we go out in the sun and to
protect our skin from harmful UV rays. Because of this advice many people are Vitamin D
deficient and Prof Michael Holick is claiming that because of this there is growing amounts of
disease linked to deficiency especially cancers.…read more

Page 5

Preview of page 5

Here's a taster:

All about Sunlight and Vitamin D production
The Sun is a very hot object therefore it radiates lots of energy in all parts of the
electromagnetic spectrum. Ultra violet radiation from the Sun causes Vitamin D production in
the body.
There are three types of ultraviolet radiation. There are UVA, UVB and UVC. Scientists
believe two of these bands UVA and UVB damage our skin in different ways. Below is a
diagram of the electro magnetic spectrum showing the three types of UV radiation.…read more

Page 6

Preview of page 6

Here's a taster:

Vitamin D
What is Vitamin D and how is it produced?
Vitamin D is known as the Sunshine vitamin because your body makes it from sunlight, UVB
rays in particular.
When UVB rays penetrate the skin it causes molecules in the skin cells to react and their
bond change ultimately resulting in the production of Vitamin D. This is then transferred via
the bloodstream.…read more

Page 7

Preview of page 7

Here's a taster:

The main source of Vitamin D is from sunlight although it can
also be found in fish, eggs, cereal and milk.
According to Dr John Toy, "Spending a few minutes in the Sun each day in your daily routine,
provides enough sunlight to produce the amount of Vitamin D that the body requires.…read more

Page 8

Preview of page 8

Here's a taster:

How can sunlight reduce the Risk of Cancer and diseases?
Cancers
Sunlight is thought to reduce the risk of cancer. This is because of vitamin D. Scientists
believe that it may play a role in controlling the production of cells. Vitamin D may have a
protective effect against certain cancers because it can prevent the overproduction of cells.
Cancers occur when cells grow out of control and destroy normal tissue. Vitamin D helps
this because it stops cells dividing more than is necessary.…read more

Page 9

Preview of page 9

Here's a taster:

What is the evidence and opinions about whether Vitamin D
actually prevents disease?
Many doctors and scientist are still arguing about whether a correlation can be found between
rises in disease and Vitamin D deficiency. The evidence that sun exposure causes skin
cancer is very extensive. On the other hand, increasing but less conclusive evidence
suggests that adequate vitamin D levels from healthy sun exposure may reduce the risk of
many other cancers and diseases.…read more

Page 10

Preview of page 10

Here's a taster:

Sunny Side up" an article taken from the Times Body and Soul page showed the general
opinion about the data on sun exposure and Prof Holick's views.
"Candidate to include an actual copy of the article from the
Times"
A letter was also published in the 22 November 2003 British Medical Journal by Professor
Cedrick Garland that argues that a lack of sunlight may be responsible for increasing the risk
of developing certain cancers.…read more

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all resources »