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KWARTAAL 1LET WEL : Hierdie huiswerk aktiwiteite word deur die Onderwysdepartement voorgeskryf. Hierdie of soortgelyke vrae kan in enige Toets of Eksamenvraestel van Grey of die Departement gevra word. Elke huiswerkstuk het die antwoorde se bladsye onder aan wat in die Antwoord Reeks verkry kan word.

EENHEID 1

1.1 Bestudeer die onderstaande tabel.

Aktiwiteit 1

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1.1 Benoem die letters :

A ________________________________________________________________________________ B ________________________________________________________________________________

C_________________________________________________________________________________

D _________________________________________________________________________________

1.2 Bestudeer die onderstaande tabel

1.2 Benoem die letters :

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E __________________________________________________________________________ F __________________________________________________________________________

G __________________________________________________________________________

H __________________________________________________________________________

I ___________________________________________________________________________

J ___________________________________________________________________________

K___________________________________________________________________________

L___________________________________________________________________________

M __________________________________________________________________________

2.1 Verduidelik die belangrikheid van water as ‘n oplosmiddel.

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Aktiwiteit 2

water polariteit

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2.2 Beskryf die gebeure wat plaasvind tydens eutrofikasie.

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5.1 Identifiseer die tipe organiese verbinding wat deur A, B en C onderskeidelik voorgestel word.

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5.2 Noem die boustene waaruit verbinding B opgebou is.

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5.3 Identifiseer die tipe binding wat X gemerk is.

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Antwoorde : 1.66

Aktiwiteit 3

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6.1 Gee die naam van elk van die volgende :

6.1.1 ensiem A ___________________________________________________

6.1.2 verbinding B ________________________________________________

6.1.3 molekules C ________________________________________________

6.1.4 ensiem X __________________________________________________

6.2 Noem die chemikalieë wat gebruik word om vir elk van die volgende te toets :

6.2.1 stysel _______________________________________________________

6.2.2 molekules C __________________________________________________

6.3 Noem die DRIE groepe koolhidrate met DRIE voorbeelde van elk.

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Antwoorde : 1.66

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7.1 Identifiseer elk van die verbindings A,B en C. Verskaf in elke geval ‘n rede vir jou antwoord.

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7.2 Verskaf DRIE redes waarom verbinding A biologies belangrik is.

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7.3 Watter verbinding ( A, B, of C ) …

7.4 Noem die monomere van verbinding C. ____________________

Antwoorde : 1.66

20.1 Identifiseer die dele wat 1 tot 5 genommer is.

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20.2 Definieer die term ensiem.

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20.3 Toon aan of die reaksie wat deur die diagram geïllustreer word, anabolies of katabolies is. Gee EEN rede vir jou antwoord.

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20.4 Wat is die funksie van die deel wat 2 genommer is ?

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20.5 Watter genommerde deel word spesifiek geaffekteer deur ‘n verandering in pH ?

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20.6 Gee ‘n verduideliking van hoe die deel wat 2 genommer is, deur ‘n verandering in pH geaffekteer word.

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Antwoorde : 1.68

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21.2 Hoeveel voedsel word by 25°C afgebreek ?

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21.3 Gee ‘n verduideliking vir die vorm van die grafiek van 5 °C tot 35 °C.

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21.4 Noem VIER eienskappe van ensieme.

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Aktiwiteit 4

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Antwoorde : 1.68

22.1 Watter resultate is in proefbuise A, B en C verkry ?

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22.2 Verduidelik die reslutate wat in proefbuis A verkry is.

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22.3 Gee EEN rede waarom die proefbuise by 37 °C gehou word.

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Antwoorde 1.68

23.1.1 optimum temperatuur

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23.1.2 katalisator

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23.2 Verduidelik waarom dit vir ‘n ensiem ongewoon is om ‘n optimum temperatuur van 60 °C te hê.

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23.3 Noem TWEE ander eienskappe van ensieme wat nie hierbo genoem is nie.

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Antwoorde 1.68

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10.1 Noem die VIER organiese verbindings in die tabel.

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10.2 Noem DRIE anorganiese voedingstowwe in die tabel en gee EEN funksie van elk.

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Aktiwiteit 7

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10.3 Noem DRIE moontlike redes waarom bokmelk verdun moet word, voordat mensbabas dit drink.

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10.4 ‘n Groeiende baba benodig 20 g proteïene per dag. Watter hoeveelheid onverdunde bokmelk sal in hierdie behoefte voorsien ? Toon alle berekeninge

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10.5 Noem VIER redes waarom proteïene deur mensbabas benodig word.

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10.6 Noem die siektetoestand wat in ‘n kind ontstaan indien daar ‘n tekort aan vitamien C in die dieet is.

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Antwoorde : bl 1.67

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29.1 Indien ‘n totaal van18 porsies per dag ingeneem word, berekendie aantal porsies wat uit elk van die voedselgroepe ingeneem behoort te word.Toon jou berekeninge.

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29.2 Drie persone, Zola, Thandi en Patrickis gevra om hul gemiddelde porsie- inname van die verskillende voedselgroepeper dagaan te teken. Die resultate is in die onderstaande tabel saamgevat. Gebruik hierdie resultate om die volgende vrae te te beantwoord.

Aktiwiteit 6

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29.1 Trek DRIE sirkeldiagramme om die inligting indie tabel grafies voor te stel. Gebruik ‘n sleutel om die voedselgroepe aan te toon.

29.2.2 Watter person sal waarskynlik ‘n tekort aan vitamiene ondervind ? Gee ‘n rede vir jou antwoord.

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29.2.3 Watter persoon sal moontlik hoë cholesterol vlakke hê en ‘n hoë risiko loop om hartvatsiektes te ontwikkel ? Gee ‘n rede vir jou antwoord.

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29.2.4 Watter probleem kan Zola waarskynlik ondervind as gevolg van die dieet wat sy volg ? Gee ‘n rede vir jou antwoord .

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29.2.5 Watter raad sou jy aan Zola gee om ‘n meer gebalanseerde dieet tot gevolg te hê ?

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29.3 Watter lewensnoodsaaklike anorganiese verbinding, wat in al die voedselsoorte voorkom, moet ook daagliks in sy suiwer vorm ingeneem word ?

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Antwoorde : bl. 1.69

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EENHEID 2

VRAAG 8

Bestudeer die onderstaande voorstelling van die proses van osmose.

8.1 Watter kompartement besit die hoogste waterpotensiaal ? Gee ‘n rede vir jou antwoord.

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8.2 In watter rigting ( A →B of B→ A) sal die netto- beweging van H2O – molekules plaasvind ?

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8.3 Omskryf die term selektief deurlatende membraan.

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Ondersoek 7

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Antwoorde 1.70

(a) Watter tipe membraan het die ballon ?

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(b) Verskaf ‘n rede vir jou antwoord. _______________________________________________________________

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2.3.3 Definieer die proses osmose.

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9.1 Watter diagram, A of B, verteenwoordig ‘n plantsel ?

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9.2 Gee DRIE waarneembare redes vir jou keuse by Vraag 9.1.

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Aktiwiteit 11

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9.3 Maak ‘n netjiese tekening, met byskrifte, van die deel wat verantwoordelik is vir die beheer van alle metaboliese prosesse in die sel.

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9.5 Maak ‘n skematiese voorstelling met byskrifte, van die deel wat 4 genommer is.

9.6 Identifiseer die dele wat 1 tot 11 genommer is.

1 ____________________________________________________________

2 _____________________________________________________________

3 _____________________________________________________________

4 _____________________________________________________________

5 _____________________________________________________________

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7 _____________________________________________________________

8 _____________________________________________________________

9 _____________________________________________________________

10 _____________________________________________________________

11 _____________________________________________________________

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9.7 Indien die plantsel 1625 x vergroot is, wat is die werklike lengte van die plantsel ?

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9.8 Hoekom word die organel wat 7 genommer is die “kragsentrale” van die sel genoem ?

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9.9 In watter een van ‘n plant of diersel sal meer mitochondria aangetref word ?

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9.10 In wattter een van ‘n spiersel of beensel sal die meeste mitochondria aangetref word. Gee ‘n rede vir jou antwoord.

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EENHEID 3

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Aktiwiteit 13

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2.2 Rangskik die fases in die korrekte volgorde deur slegs van die korrekte letters gebruik te maak.

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2.3 Identifiseer die byskrifte wat van 1 tot 10 genommer is.

1 - ________________________________________________________________ 2- ________________________________________________________________

3- ________________________________________________________________

4 - ________________________________________________________________

5- _________________________________________________________________

6- _________________________________________________________________

7- _________________________________________________________________

8- _________________________________________________________________

9 -_________________________________________________________________ 10 - ________________________________________________________________

2.4 Dui die chromosoomgetal van ‘n dogtersel, wat uit die bostaande kerndeling gevorm

sal word, aan.

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Antwoorde : 1.71

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3.2 Waarom is die chromosoomgetal in alle organismes altyd ‘n ewe getal ?

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3.3 Uit watter twee chemiese verbindings word ‘n chromosoom opgebou ? ___________________________________________________________________

3.4 Wat word die afsonderlike twee stringe van elke chromosoom genoem ?

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Aktiwiteit 12

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3.5 Wat is die naam van die struktuur wat die twee stringe in Vraag 3.4 genoem, verbind ?

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3.6 Noem die segment op ‘n chromosoom, wat ‘n erflike eienskap beheer.

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3.7 Noem die proses tydens interfase, waartydens DNA ‘n identiese kopie van homself maak.

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Antwoorde : 1.71

EENHEID 4

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Aktiwiteit 15

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6.2 Noem die funksies van :

6.2.1 areolêre bindweefsel

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6.2.2 digte bindweefsel

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6.3 Noem die DRIE tipes kraakbeen wat onderskei kan word.

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Aktiwiteit 15

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6.4 Watter proteïen kom in kraakbeen voor ?

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6.5 Beskryf die voorkoms van chondrosiete in hialienkraakbeen.

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7.1 Identifiseer die bloedkomponente wat 1 tot 4 genommer is.

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Aktiwiteit 15

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7.2 Onderskei tussen limfosiete en fagosiete deur spesifiek na hul funksie te verwys.

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7.3 Die struktuur wat 1 genommer is, se bou is baie nou verbind met sy funksie. Bespreek hierdie stelling.

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Aktiwiteit 15

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8.2 Gee ‘n rede vir jou antwoord in Vraag 8.1

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8.3 ‘n Ysterryke diet is nodig vir die vorming van voldoende hemoglobien in die menslike Liggaam. Indien daar ‘n tekort aan yster is, is die person bloedarmig (anemies). Verdudelik waarom ‘n anemiese persoon :

8.3.1 bleek is ______________________________________________________ ______________________________________________________

8.3.2 koud voel ______________________________________________________ ______________________________________________________

8.3.3 moeg is ______________________________________________________

8.4 Hoeveel rooibloedliggaampies word op ‘n hoogte van 3000 m bo seevlak aangetref ?

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8.5 Identifiseer die volgende veranderlikes soos in die grafiek voorgestel :

8.5.1 afhanklike ________________________________________________________

onafhanlike _______________________________________________________

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A : _____________________________

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B : _______________________________

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Aktiwiteit 15

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12.1 Identifiseer die weefsels wat A tot F gemerk is.

A ___________________________________________________________________

B ___________________________________________________________________ C ___________________________________________________________________

D ___________________________________________________________________

E ___________________________________________________________________

F ___________________________________________________________________

12.2 Identifiseer die byskrifte wat 1- 9 genommer is.

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Aktiwiteit 15

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12.3 Gee TWEE funksies van die weefsel wat A gemerk is.

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12.4 Noem TWEE plekke in die menslike liggaam waar die weefsel wat B gemerk is, sal voorkom.

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