Viruses Instructor: Ms. Jeremy Pomar Subject: Science Class: Grade 9A Time: 8:!"9:! a.m. I #bjecti$es% At t&e end o' t&e lesson t&e students are e()ected to% a. identi identi'y 'y $iru $iruss and and it*s it*s )arts )arts b. distin+uis& $irus and bacteria c. dra, dra, a )ic )ictu ture re o' a $ir $irus us II Subject Matter A. To)ic To)ic:: Viruse irusess -. e'e e'ere renc nces es:: • •
/()lorin+ 0i'e t&rou+& Science by 1erriols"Pa$ico2 et al. )).338"339 ,,,.an+el'ire.com
C. Mat Materia erialls: •
Virus Model
•
-ond Pa)ers
•
Pencil
•
Art Materials
•
Projector
4. Conc Conce) e)tts: a. Virus Viruses es are in'ect in'ectiou iouss a+ents a+ents made u) o' nucleic nucleic acids 56A 56A or 46A7 46A7 t&at enclosed in a )rotein coat called as CAPSI4. A $irus 'ound outside t&e cell is called as VII#62 ,&ic& can inert )articles t&at cannot +ro, and under+o biosynt&etic or bioc&emical acti$ity. Viruses Viruses are submicrosco)ic )articles ,it& sie siess ran+i ran+in+ n+ 'rom 'rom !" !"!! !! nanom nanomet eter ers2 s2 a))ear a))earin in+ + as eit& eit&er er &elic &elical al or icosa&edral in s&a)e.
T&e Virus Structure
Com)arison C&art -acteria ibosomes
Present
Cell ,all
Pe)tido+lycanli)o)olysacc&arid e
Virus Absent
6o cell ,all. Protein coat )resent instead.
#)inions di''er on ,&et&er $iruses are a 'orm o' li'e or or+anic structures t&at interact ,it& li$in+ or+anisms.
0i$in+ attributes
0i$in+ or+anism
6umber o' cells
;nicellular% one cell
6o cells% not li$in+
6ucleus
6o
6o
Structures
46A or 6A 'loatin+ 'reely in cyto)lasm.
46A or 6A enclosed inside a coat o' )rotein.
membrane.
Treatment
Antibiotics
Vaccines )re$ent t&e s)read and anti$iral medications &el) to slo, re)roduction but cannot sto) it com)letely. co m)letely.
/nymes
=es
=es2 in some.
Virulence
=es
=es
In'ection
0ocalied
Systematic
Some bacteria are bene'icial 5e.+. certain bacteria are re>uired in t&e +ut7
Viruses Viruses are not bene'icial%
-ene'its
e)roduction
1ission" a 'orm o' ase(ual re)roduction.
Sie
0ar+er 53!!! nm7
/. 3st Century S?ills: • •
Creati$ity Coo)erati$eness
In$ades a &ost cell and ta?es o$er t&e cell causin+ it to ma?e co)ies o' t&e $iral 46A6A. 4estroy t&e &ost cell releasin+ ne, $iruses.
Smaller 5!"@!! nm7
1. Subject Inte+ration: • •
MAP/< Values /ducation
G. Values Inte+ration: • •
Ta?in+ Ta?in+ care o' t&eir sel$es Valuin+ t&eir &ealt&
III. Procedure A. Preliminaries Teac&er*s Acti$ity
Student*s Acti$ity
a. Greetin+s: Good mornin+ classB
Good Mornin+ ma*amB
b. #)enin+ Prayer: Jose)&ine2 )lease lead t&e )rayer.
Jose)&ine: 0et us )ut oursel$es in t&e )resence o' t&e 0ord. In t&e name o' t&e 1at&er and o' t&e Son and o' t&e
Please all be seated
c. C&ec?in+ o' attendance: May I c&ec? t&e2 )lease say )resent i' you are &ere. d. C&ec?in+ o' )re)aration:
Present
4oes e$ery +rou) brin+ on t&e t&in+s I*d told you yesterday
=es ma*am
#?ay t&at*s +ood
-. Moti$ation Teac&er*s Acti$ity
Student*s Acti$ity
#ur to)ic 'or today is all about t&is 5Teac&er 5Teac&er ,ill )resent t&e model o' t&e $irus $ irus to t&e class7
So ,&o can tell me ,&at is t&is. And ,&y do you t&in? soD =es AldrinD*
Aldrin: Mini robot ma*am because it loo?s li?e one.*
#?ay t&an? you Aldrin.
ic&ard: Virus ma*am because o' its structure.
T&an? you ic&ard. So ic&ard is ri+&t2 t&is really a $irus.
C. 0esson Pro)er Teac&er*s Acti$ity So ,&at are ,e +oin+ to do t&e ,&ole )eriodD 1irst is ,e s&ould learn to de'ine a $irus2 its c&aracteristics and )arts. Secondly2 ,e s&ould dist distin in+ui +uis& s& a $iru $iruss 'rom 'rom a li$i li$in+ n+ cell cell.. And lastly you s&ould dra, a $irus. So in t&e last
Student*s Acti$ity
=es ma*am
,&ere you are +oin+ to use your assi+nment o?ayD Is e$eryt&in+ clearD
5T&e teac&er ,ill 'las& )ictures7
Class2 ,&at do you t&in? is t&e a+ent t&at /unice: Virus ma*am caus causes es t&e t&e condi conditi tion onss in t&e t&e )ict )ictur ures esDD =es /uniceD
Is it correct classD
=es ma*am
#?ay t&at*s correct. It is true t&at disease li?e )olio2 &e)atitis and den+ue are $iruses. T&at*s ,&y t&ose are called as $iral diseases.
So ,&at is a $irusD =es =es jenny ?indly read. read.
Jenny: A $irus is an in'ectious a+ent ,&ic& is made u) o' nucleic acid 546A or 6A7 t&at enclosed in a )rotein called as CAPSI4.
Very Very ,ell said. Jenny Jenn y is correct class t&at a $irus &as a )rotein coat ,&ic& is called a ca)sid ,&ere t&e nucleic acid is enclosed.
E4o $irus consider as li$in+ t&in+sD F&yD =es =es C&risto)&erD
C&risto)&er: It de)end ma*am because ,&en a $irus is 'ound outside t&e cell it is just an inert )article and &as no ca)acity to biosynt&esis. -ut -ut ,&en ,&en it is alre alread ady y inje inject ct its its +ene +eneti ticc material in a li$in+ cell it is already considered as li$in+.
=es $ery ,ell said. C&risto)&er is correct. A $irus is considers non"li$in+ ,&en it is 'ound outs outsid idee t&e t&e cell cell beca becaus usee it is just just an iner inertt )article ,&ic& cannot biosynt&esis meanin+ cannot )er'orm t&e basic c&emical )rocess t&at a li$in+ cell can2 ,&ile it success'ully inject it*s +enetic material to a li$in+ cell it is already li$i li$in+ n+ beca becaus usee it can can alre alread ady y use use all all t&e t&e or+ or+anel anellles o' a cel cell and and )rod )roduc ucee a ne, ne, $iruses.
Any >uestion 'or t&atD
6one ma*am
0et*s come no, to t&e com)arison o' a $irus and bacteria.
5T&e teac&er ,ill )ose a c&art in t&e board7
F&at do you understand in t&e c&artD =es =es Mic&elleD
Mic&elle: T&e $irus and bacteria are bot& not &a$in+ nucleus.*
Very +ood obser$ation2 ,&o elseD =es Vit&D
Vit&: Vit&: bacteria re)roduced by 'ission ,&ile t&e $irus is t&rou+& in$adin+ a li$in+ cell.*
T&at*s correct2 last one. =es JessaD
Jessa: Some o' t&e bacteria are bene'icial ,&ile $iruses are not.
Also true. T&an? you e$eryone. 0et us come
no, to t&e acti$ity.
Acti$ity:
0et*s &a$e our acti$ity. Class2 +et your art materials and )roceed to your res)ecti$e +rou)s.
Instruction: 4oes e$eryone in t&eir +rou)s already settleD 4ra, anyt&in+ t&at can re)resent a $irus 'or you and c&oose a $olunteer t&at ,ill )resent your ,or? to t&e class. /$eryt&in+*s clearD
=es ma*am.
So you can start no,
A'ter t&e Acti$ity:
#?ay class I ,ill +i$e 'i$e minutes 'or eac& +rou) 'or t&eir )resentation. 5A re)resentati$e re)resentati$e ,ill )resent t&eir out)uts )er +rou)7
ESo ,&o can +i$e a +eneraliation 'or ,&at ,e Marie: A $irus can be considered as a bounder &ad &ad disc discus usse sed d today today.. Any $olunt $oluntee eerD rD =es bet,een li$in+ and non"li$in+ because o' its MarieD s)ecial ca)abilities.
So So t&at t&at is true true22 it can can be cons consid ider ered ed as a boundary bet,een li$in+ and non"li$in+ because it can be classi'ied eit&er o' t&e t,o. 6one ma*am
Are t&ere any >uestions be'ore I end my lectureD*
IV /$aluation Identi'ication: 3. T&ese are in'ectious a+ents made u) o' nucleic acids 546A or 6A7 . It is t&e )rotein coat ,&ere t&e 46A or 6A o' a $irus bein+ enclosed. . It is an inert )article t&at cannot +ro, + ro, and under+o biosynt&etic or bioc&emical acti$ity. @". Gi$e t,o diseases t&at are cause b y a $iruses. H". Gi$e t,o c&aracteristics o' a $irus. 8"3!. 4iscuss t&e di''erence o' t&e $irus and a li$in+ cell 33"3 label t&e )arts o' t&e $irus.
