Life Sciences Memo 2 (English)

May-June 2025 — Grade 12 / Matric — Life Sciences

Memo 2025 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 9 pages 📝 37 items found 📚 2 topics

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Q1— Section header —

1.1x 2\

1.2.10lleles Chloroplast Phylogenetic tree /Cladogram Recessive allele Extinction Artificial selection /Selective breeding

1.3.3B only Both A and B None 3 x 2\ (6\

1.4.1(a\ (b\ Transcription DNA Replication (1\ (1\

1.4.2mRNA (1\

1.4.3(a\ (b\ (c\ Double helix Interphase Uracil sugar Hydrogen /Four

1.5.1Plant h eight Flower colour (2\

1.5(a\ (2\ (7\ TOTAL SECTION A:

Q2— Section header —

2.1.1Ovaries Testes Any (Mark first ONE only\ (1\

2.1(a\ Spindle fibre (1\ (b\ Centriole (1\

2.1four (1\

2.1.5In diagram 1 the centromeres split In diagram 2 the centromeres do not split In diagram 1 only chromatids (daughter chromosomes\ move to the opposite pole /chromosomes separate In diagram 2 chromosomes move to the opposite pole

2.1Adjacent (non sister\ chromatids of homologous chromosomes overlap at points called chiasmata /chiasma There is an exchange of genetic material

2.2Failure of a homologous pair /ch romosome to separate eads to a gamete with 24 chromosomes n extra chromosome The fertili ation of this gamete

2.3(a\ Translation (1\ Transfers amino acids to the ribosome according to the mRNA codon

2.3(a\ GUA (b\ CAT The sequence of bases on a DNA molecule changes from CCT to CGT /second base in DNA triplet changed from C

2.4Both alleles for black feathers and white feathers are equally dominant expressed in the phenotype

2.4Blood group (1\

2.5.1(a\ Pedigree diagram (1\ (b\ chromosome (1\

2.5.4(a\ an cause rickets (Mark first TWO only\ The daughters inherit the dominant allele/X from their father

3.1.1Animals: The nucleus is removed from ovum The nucleus of a donor somatic cell is removed and inserted into the ovum Electric shock is used to activate mitosis An embryo develops and is implanted

3.1.2(Exact copies\ of the most productive livestock are made Conservation of endangered species Replacement of damaged tissues/organs Any

3.2All s tickleback fish had spikey fins The fish did not use the spikey fins anymore /they used their fins less

3.3.1(Mark first THREE only\ \ + 1 table Skull A Skull B Rectangular shaped palate Rounded shaped

3.3.2is short and wide (2\ (9\

Q3— Section header —

3.4.1mosquitoes (1\

3.4(a\ (b\ Use of antimalarial drugs (1\ (1\

3.4= 37

3.4(a\ Blood samples only collected from people taking the anti malarial drug The same affected a rea of collection of blood samples The same v illages were

3.4There w as variation in the malaria parasite population and others were not When parasites were exposed to the antimalarial drugs Those that were not drug resistant did not survive

3.5Two (1\

3.5.22 mya (1\

3.5s Ples Little foot Any (Mark first TWO only\

3.5Fossils of africanus were found in Africa only habilis were found in Africa only ldest fossils of erectus sapiens

Topics Identified

Cell BiologyGenetics

Mark Allocation

Total150 marks

Sections50 = 50 marks

Paper information

SubjectLife Sciences

Year2025

SessionMay-June

TypeMemo

PaperPaper 2

LanguageEnglish

Pages9

Downloads3

Examination context

Decade2020s

Years ago1y

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 (English) →

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Pages9

Archived on7 September 2026

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