<< Chapter < Page Chapter >> Page >

Questions:

a) Write down what is meant by a "healthy lifestyle".

b) Which environmental factors could enhance the distribution of AIDS?

c) What do you see as your own responsibility towards yourself as well as to others with regard to HIV/AIDS?

2. TUBERCULOSIS (TB)

  • what is tuberculosis? (TB)?

It is a disease, caused by bacteria, that normally affects the lungs but which can also affect the spinal cord, heart and kidneys. It is highly infectious, as small droplets of spittle containing the bacteria that are dispersed through the air when the infected person coughs are inhaled by other people. According to estimates, one infected person communicates the disease to three other people before treatment of the infected person commences. When or an infected person does not complete the course of treatment, it is estimated that he or she will infect ten other people before he or she dies.

The symptoms include a cough that lasts for weeks, weakness, night sweats, pains in the chest and coughing up of blood.

  • How is it possible to avoid becoming infected with TB?

By keeping the body strong and taking care when among people. People who are within breathing distance of people infected with TB are very vulnerable. Good housing is important.

People who work in mines where there is silica (a type of rock) are also vulnerable.

Anybody who shows symptoms of the disease should be tested straight away, so it is important for people to be informed about the disease.

  • Is it possible to help people who have TB?

Yes. Tests can be done at clinics, hospitals and by doctors. Treatment takes from six to nine months. The danger is that TB sufferers begin to feel better after a few days of treatment and then stop taking the medication. At this stage only a small number of the bacteria have actually died and the rest have started building up resistance to the disease. This means that the medication is less effective when the condition of the patient worsens, and many such patients eventually die from the disease.

Assignment:

Plan a campaign to improve the problem of TB in South Africa.

3. MALARIA

  • What is malaria?

malaria is a disease that is caused by a unicellular organism that lives and multiplies in the red blood corpuscles and destroys the cell when it breaks free. The organisms multiply extremely rapidly and very quickly cause severe illness in the form of chills and fever, leading to the death of the affected person.

The organism gains entry into the body when an infected mosquito bites the person.

  • How is it possible to avoid becoming infected with malaria?

By avoiding areas where malaria occurs, by wearing long-sleeved clothing and by applying mosquito repellents to the skin. Mosquitoes can also be controlled by means of poisons. All the countries in an affected region need to co-operate, otherwise the disease easily spreads back again. The measures also have to be continued for long enough. In the past, efforts to eradicate the mosquitoes have not been successful.

  • Is it possible to help people who have malaria?

Yes, provided they react quickly when the symptoms of infection occur and they are able to get medical help. Prophylactic medication (that stops you getting the disease) is relatively effective, but has to be taken correctly. The medication has to be continued for four weeks after leaving the infected area.

The malaria organism is able to adapt very rapidly and to build up resistance against medication. This means that medication might be effective initially, but can systematically lose effectiveness.

The initial symptoms are like those of influenza, but the headaches and nausea become acute and are followed by a high fever.

Assignment:

Investigate the possibility of fighting malaria by treating or changing the areas where malaria is rife.

Assessment

Learning outcomes (LOs)
LO 1
Promotion of Health The learner is able to make informed decisions concerning personal, community and environmental health.
We know this when the learner:
1.1 plans an action in which laws and/or policies for protecting environmental health are applied to address an environmental health issue;
1.2 critically analyses the causes of common diseases in relation to socio-economic and environmental factors;
1.4 indicates that he/she is able to take responsible and informed decisions on personal and environmental safety; and;
1.5 examines a health and safety issue related to violence, and proposes alternatives to violence as well as counter-strategies.
LO 2
Social Development The learner is able to demonstrate an understanding of and commitment to constitutional rights and responsibilities, and to show an understanding of diverse cultures and religions.
We know this when the learner:
2.1 discusses the violation of human rights and plans counter strategies;
2.2 explains how democratic processes can be employed to deal with local problems;
2.3 discusses how he / she would promote nation building in different contexts;
2.4 critically evaluates changes in cultural norms and values in terms of personal and community issues; and
2.5 is able to discuss the contributions made to social development by organisations from within different religions.

LO 5

Orientation with Regard to the World of Work

The learner will be able to make informed decisions about further study and career choices.

We know this when the learner:

5.1 identifies and discusses career and study choices and their corresponding requirements;

5.2 investigates career and study opportunities related to own interests and abilities.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Berger describes sociologists as concerned with
Mueller Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Life orientation grade 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11048/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Life orientation grade 8' conversation and receive update notifications?

Ask