life sciences Memo 2 (English)

November 2014 — Grade 12 / Matric — life sciences

Memo 2014 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 11 pages 📝 51 items found 📚 5 topics

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Q1— Section header —

1.2.1Recessive

1.2.2Gene

1.2.3Cloning

1.2.4Genetic engineering

1.2.5Artificial selection

1.2.6Punctuated equilibrium

1.2.7Anaphase I

1.2.8Non disjunction

1.2.9Chromosome

1.2.10Theory (10\

1.3.1Both A and B

1.3.2A only

1.3.3Both A and B

1.3.4Both A and B

1.3.5A only

1.3.6only (6 x 2\ (12\

1.4.1Two characteristics are involved in the cross (1\

1.4.2(a\ (1\ (b\ ; T 3 correct all 4 correct (2\

1.4Taste blind and normal skin pigmentation (2\

1.4(8\ TOTAL SECTION A

1.1.10(10 x 2\ (20\ P2

Q2— Section header —

2.1.1Translation (1\

2.1.2tRNA transfer RNA mRNA messenger RNA (2\

2.1.3nticodon (1\

2.1.4(1\

2.1yrosine (2\

2.1he process is transcription (1\ double stranded DNA molecule unwinds /unzips he hydrogen bonds break One strand is used as a template o form mRNA

2.2Lindiwe and Bandile (Mark first TWO only\ (2\

2.2.2They have DNA bands which correspond with the banding patterns from both parents Zinhle and Ayanda (2\

2.2.3To investigate crimes resolve disputes To identify organisms from their remains To identify family relationships other than paternity , e.g. siblings or cousins To test for the presence of specific alleles

2.3.1omo habilis (1\

2.3.2Paranthropus robustus Paranthropus boisei Homo sapiens and Homo habilis (Mark first TWO only\ Any 2 (2\

2.3.3

2.3.4Olfactory brain centres reduced reduce sense of smell Eyes in front Binocular vision stereoscopic vision Eyes with cones colour

2.3.51,2 000 000 000 years

2.4.1More fewer long winged short winged flies will survive die Equal numbers

2.4.2to move out and to move ventilation To allow respiration breathing o that flies do not die suffocat

2.4Repeat the investigation Increase the number of flies Using many flasks replications (Mark first TWO only\ Any 2 (2\

2.4Ensure that the flies do not come into contact with the sticky paper when placing them in the flask so that their death will not be caused by the investigator Ensure sufficient food supply

Q3— Section header —

3.1.3and B can interbreed and produce fertile offspring making them one species does not mate with , which makes C a different species

3.2.1rovide additional nutrients all year round rovided itamin D Provided calcium (Mark first ONE only\ Any 1

3.2Primitive humans H. erectus migrated out of Africa long before the ability to digest milk evolved They did not have the mutation enzyme gene allele

3.2Mutations mitochondrial DNA

3.3.2The pelvis is short compared to its width The pelvis is w ider compared to its

3.3.3Frees the arms so that they could carry offspring tools / food manipulate things Allows ability to see further to spot danger food

3.4.2Allows for a bigger brain Development of speech communication Higher intelligence omplex behaviour uick rocess

3.5.3enotype Normal male Haemophiliac female enotype Meiosis /gametes Fertilisation enotype Phenotype

Q4— Section header —

Topics Identified

Cell BiologyGeneticsEvolutionRespirationAnimal Behaviour

Mark Allocation

Total150 marks

Sections40 + 40 = 80 marks

Paper information

Subjectlife sciences

Year2014

SessionNovember

TypeMemo

PaperPaper 2

LanguageEnglish

Pages11

Downloads3

Examination context

Decade2010s

Years ago12y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2014

Days since exam4,373

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 (English) →

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