life sciences Memo 2 (Afrikaans)

Feb-March 2015 — Grade 12 / Matric — life sciences

Memo 2015 Grade 12 Afrikaans Life Sciences Hub →

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🎯 150 marks 📄 12 pages 📝 40 items found 📚 1 topics

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Q1— Section header —

1.1.10(10 x 2\ (20\

1.2.5

1.2.10Kar otipe /Kariogram Nukleusporie Kloon Hipotese Biogeografie (10 x (10\

1.3.3Beide A en B /Beide/A Beide A en B /Beide/A Slegs

1.3.6Slegs Beide A en B /Beide/A Geeneen (6 x 2\ (12\

1.4.1(a\ Nukleotied (2\ (b\ Fosfaat /fosfaatioon Deoksiribose suiker (2\

1.4.3Nukleus Interfase (1\ (1\ (8\ TOTAAL AFDELING A:

Q2— Section header —

2.1.1(1\

2.1.2(a\ (b\ (2\ (2\

2.1.3

2.1.4(2\ (11\

2.2.1Andrew het kort vingers en Susan het normale vingers Andrew het reguit hare terwyl Susan krulhare het (2\

2.2.2, bh (2\

2.3.1(a\ (b\ of I (2\ (1\

2.3Die baba erf een alleel vir tipe bloed/i van elke ouer aangesien haar genotipe ii Mnr. Phonela het nie die alleel vir O ipe bloed/i nie (3\

2.3.3Bloed groep kan gebruik word om 'n sekere man uit te skakel as die ouer maar kan nie bevestig dat 'n spesifieke man die vader is nie Aangesien 'n groot gedeelte van die bevolking dieselfde loed

2.3.4'n Normale vrou het twee X chromosome 'n Normale man het een X en een Y Die vrou voorsien altyd die X in die eiersel As 'n eiersel bevrug word deur 'n X draende spermsel word 'n dogter gevorm

2.4.1Om te voorkom dat selfbestuiwing plaasvind in die blomme van Bevolking 1 Om te verseker dat kruisbestuiwing plaasvind tussen die blomme van Bevolking 1 en Bevolking 2

2.4.2Die sade gevorm kon nie ontkiem nie (1\

2.4.3Tipe grond Hoeveelheid water Temperatuur Blootstelling aan sonlig Saai diepte in die grond Sien slegs eerste TWEE (Enige 2\ (2\

2.4.4Herhaal die ondersoek Vergroot die monster /aantal sade/getal areas/getal plante Sien slegs eerste EEN (Enige (1\ (6\

2.5'n Bevolking van 'n sekere spesie kan in twee bevolkings verdeel word As gevolg van 'n geografiese skeiding Daar sal nie geenvloei tussen die twee bevolkings plaasvind nie As gevolg van die verskil in omgewingstoestande

1.8<25 25-29 30-34 35-39 Voorkoms van Down sindroom (per 1 000 geboortes\ Die voorkoms van Down sindroom as resultaat van niedeling

Q3— Section header —

3.1.1Kriteria Verduideliking Punt Tipe grafiek Histogram is getrek van Meiose II Opskrif Sluit beide veranderlikes in: 'Voorkoms van Downsindroom en Ouderdom van moeder' Korrekte opskrif en

3.1.3verdeling /nie disjunksie Meiose I (1\ (1\

3.1.4Getal babas met Downsindroom x 44 10,71 /11 (3\

3.2.1

3.2.3ACA Treonien ; Sistien moet in korrekte volgorde wees (1\ (2\

3.2.4Beide ATG en ATA Kode vir dieselfde aminosuur /tirosien (2\

3.2.5

3.3.1fenotipe rooi geel X rooi geel genotipe RY X RY Meiose /gamete R, Y X R, Y Bevrugting genotipe RR, RY, RY, YY

3.3.3/half 'n Boom met rooi appels moet gekruis word met 'n boom wat geel appels dra (1\ (2\ (9\ Gamete 1 punt vir korrekte

3.4.1A. anamensis en A. afarensis Sien slegs eerste TWEE (2\

3.4.3(4,5mya 3mya\ = 1,5 mya skedel vergroot sodat dit 'n groter brein kan

3.4.4Kleiner tande /oogtande in Homo spesies, kan voedsel kou wat gaar en sag

Q4— Section header —

4.1Evolusie volgens Lamarck Lamarck verduidelik evolusie deur die volgende twee 'wette': Die wet van gebruik en ongebruik As 'n organisme 'n orgaan of struktuur gereeld gebruik , ontwikkel dit word dit beter

Multiple Choice Options

A)anamensis

Topics Identified

Genetics

Mark Allocation

Total150 marks

Sections40 + 40 = 80 marks

Paper information

Subjectlife sciences

Year2015

SessionFeb-March

TypeMemo

PaperPaper 2

LanguageAfrikaans

Pages12

Downloads7

Examination context

Decade2010s

Years ago11y

Season—

Start day—

Exam period—

Days since exam—

About life sciences examination preparation

Grade 12 Life Sciences combines biological knowledge with interpretation and scientific reasoning. Paper 1 covers molecular biology, genetics, and cell biology, while Paper 2 tests human physiology, ecology, and evolution.

Every available Grade 12 Life Sciences past paper and memorandum is collected in the Life Sciences hub at life-sciences.freemode.co.za — browse all years, sessions and languages in one place.

How to use this resource for revision

A past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

recalling biological concepts

applying knowledge to unfamiliar situations

interpreting diagrams and information

using scientific terminology

constructing precise written responses

A practical revision approach

Life Sciences rewards exact biological terminology — examiners deduct marks for paraphrased definitions. Create a glossary of key terms and practice using them in context.

Grade 12 subject hubs

Each matric subject has its own dedicated hub on Freemode with every past paper and marking memorandum we have archived for that subject.

➗ Mathematics View papers → 📊 Mathematical Literacy View papers → ⚗️ Physical Sciences View papers → 🧬 Life Sciences 📍 You are here 📒 Accounting View papers → 💼 Business Studies View papers → 📈 Economics View papers → 🌍 Geography View papers → 🏛️ History View papers → 📖 English View papers → 🇿🇦 Afrikaans View papers → 🗣️ IsiNdebele View papers → 🗣️ IsiXhosa View papers → 🗣️ IsiZulu View papers → 🗣️ Sepedi View papers → 🗣️ Sesotho View papers → 🗣️ Setswana View papers → 🌾 Agricultural Sciences View papers →

Corresponding examination paper

Examination paper available

Open the corresponding examination paper to practise the questions before reviewing the marking memorandum on this page. Attempt every question under timed conditions for the most realistic preparation.

life sciences Paper 2 (Afrikaans) →

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