Life Sciences Memo 1 (English)

May-June 2021 — Grade 12 / Matric — Life Sciences

Memo 2021 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 9 pages 📝 33 items found 📚 3 topics

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Questions — A Preview of What to Expect in the Document

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Q1— Section header —

1.2.1Monoculture

1.2.2Deforestation

1.2.3Penis

1.2.4Peripheral

1.2.5Binocular /stereoscopic vision

1.2.6Corpus luteum

1.2.7Synapse

1.2Aquifer

1.2.9Oestrogen (9 x 1\ (9\

1.3.3Both A and B A only Both A and B (3 x 2\

1.4.1(a\ (b\ Semi circular canals Auditory nerve (1\ (1\

1.4.2(a\ (b\ Oval window Round window (2 (2

1.4.3(a\ (b\ Cerebellum Hair cells Organ of Corti (1\ (1\

1.5.2Reflex arc To minimise injury (1\ (1\ 1.

5.3(a\ (b\ (c\ Interneuron /connector Ventral root Effector /muscle

Q2— Section header —

2.1.6Centromere Metaphase I A pair of chromosomes with the same structure location of centromere/ length and

2.2.2

2.2.3 Sweat gland Structure A will constrict /vasoconstriction occurs Less blood flows towards the surface of the skin

2.3.2

2.3.3Pituitary gland Hypophysis/ Hypothalamus Water levels are higher than normal in blood since less water is lost through sweating

3.1.2Sclera Absorbs light rays /prevents internal refle ct ion of light in the eye

3.1.8Part contains photoreceptors /cones therefore the

3.2.4They stimulate cell elongation /cell division (Mark first ONE only\

Q3— Section header —

3.3.5Sheep and goats To trap heat energy keep Earth warm enough to sustain life (Mark first ONE only\ 4 623 1 826 (668+684+474\illion tonnes

3.4.1

3.4.2

3.4.3

3.4.4

3.4.5Thermal pollution refers to the change from the normal temperature of an aquatic ecosystem Thermal pollution lower s the

Q4— Section header —

Topics Identified

Cell BiologyGeneticsEcology

Mark Allocation

Total150 marks

Sections40 = 40 marks

Paper information

SubjectLife Sciences

Year2021

SessionMay-June

TypeMemo

PaperPaper 1

LanguageEnglish

Pages9

Downloads4

Examination context

Decade2020s

Years ago5y

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 1 (English) →

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File size284.6 KB

Pages9

Archived on7 September 2026

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