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Natural sciences

Grade 9

Life processes: healthy life

Module 8

Family planning and vevereal diseases

Venereal disease:

  • As sex involves close contact between two persons, infectious diseases are transferred very easily. VENEREAL DISEASE is transferred through SEXUAL CONTACT .

Venereal diseases have different symptoms:

AIDS

  • The immune system is under attack

The infected person develops illnesses such as cancer, pneumonia and fungal infections and has no defense against them

GONORRHOEA

  • Babies are born blind
  • Burning sensation when urinating

Painful wrists

SYPHILIS

  • Sores on genital organs
  • Skin rashes

Bacteria could attack the brain and cause blindness and mental disease

  • QUESTIONS ABOUT VENEREAL DISEASES:

1. Which of the above diseases can be treated successfully? How?

2. What is the difference between “HIV-positive” and “AIDS”?

3. How could a person who is HIV-positive extend his or her life expectancy?

4. What is NEVIRAPINE and for what is it prescribed?

Assessment: Questions on VENEREAL DISEASES

Were you able to answer the questions successfully?

LO 2.3

Family planning and contraception:

Couples nowadays have various reasons for wanting to limit the size of their families to fewer or no children and the prevention of pregnancy has become an important issue for them.

Family planning concerns a couple’s planning for pregnancies, usually with the idea of providing financial security for their children.

Many couples, however, simply want to prevent pregnancy altogether and therefore make use of the same METHODS OF contraceptiON .

Methods of contraception:

  • There are NATURAL and ARTIFICIAL MEANS of contraception:

Natural:

  • ABSTINENCE – no sexual intercourse. The popularity of this method by young people is increasing. It is one of a few methods that prevent pregnancy completely (100%) and also prevents sexual diseases.
  • The rhythm method – During ovulation the body temperature increases. By keeping a record of body temperature, a woman can know when she is ovulating. This information can help couples to avoid, or achieve, pregnancy.

Artificial methods:

CONDOM: a rubber sheath placed over the penis

DIAPHRAGM: a rubber shield that is inserted by a woman before intercourse

IUD (intra-uterine device). A device that is inserted into the uterus by a doctor, and which remains in place for months

CONTRACEPTIVE PILLS: “The Pill”

STERILISATION:Tubes are bound or severed

Class activity: discussion on contraception

1. Why should people use family planning? List three reasons.

2. Explain why the rhythm method is not very dependable as a method of contraception.

3. Why is abstinence gaining popularity as a method of contraception?

4. Explain why none of the artificial methods can be regarded as 100% reliable.

5. Explain what each of the following is:

a) a VASECTOMY

b) a HYSTERECTOMY

c) SPERMICIDAL CREAM

6. When you marry, how many children would you like to have, and why?

7. What do you think of ABORTION? Remember that all of us are entitled to our own opinions!

Assessment: CLASS DISCUSSION

Are you able to detect the connection between science and the society in which you live?

SO 3.1

Assessment

Learning Outcomes 2 : Constructing Science Knowledge

The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

We know this when the learner:

2.3 interprets information

Learning Outcomes 3: Science, society and environment

The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

We know this when the learner:

3.1 understands science as a human endeavour.

Memorandum

QUESTIONS ABOUT VENEREAL DISEASES:

1. bacterial infections can be treated with antibiotics

2. HIV+ means that a person has been infected with the virus; AIDS is the full-blown disease

3. A healthy lifestyle, exercise, plenty of fresh vegetables and fruit, medication that suppresses the virus infection

4. Prevents mother to child transmission of the virus at and after birth

CLASS ACTIVITY: DISCUSSION ON CONTRACEPTION

1. Quality of life, financial security, costs of living, education

2. cycles may vary – not reliable

3. the only method with real guarantees; return to stronger moral values because of fears related to HIV and other factors

4. All are fallible because of the human aspect.

5. a) severing of sperm tubes of the male – sterilisation

b) removal of the uterus of the female – sterilisation

c) medicinal cream that is usually applied together with other products for contraception

6 and 7 own opinion

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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
characteristics of micro business
Abigail
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.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Berger describes sociologists as concerned with
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Source:  OpenStax, Natural sciences grade 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11069/1.1
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