Life Sciences Memo 1 (English)

November 2023 — Grade 12 / Matric — Life Sciences

Memo 2023 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 10 pages 📝 48 items found 📚 3 topics

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Q1— Section header —

1.2.1Vivipary

1.2.2Urethra

1.2.3Peripheral nervous system

1.2.4Glycogen

1.2.5Placenta

1.2.6Choroid

1.2.7Myelin sheath

1.2.8Epididymis (8 x 1\ (8\

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

1.4.1(a\ (b\ Semi circular canals Round window

1.4.2(a\ (b\ Eustachian tube Cochlea

1.4.3(a\ (b\ (1\ (1\ (8\

1.51.

5.1(a\ (b\ (c\ Zygote Morula Blastocyst /blastula

1.5.2(a\ (b\ ertilisation Endometrium (1\ (1\

1.5.31.

1.5.5Mitosis 23 Chorion (1\ (1\ (8\

Q2— Section header —

2.1.4External fertilisation The eggs will dry out because they have no shells are not amniotic eggs

2.2.1(a\ (b\ Seminal vesicle Testosterone (1\ (1\

2.2.2It is alkaline to neutralise the acidic conditions of the vagina It contains mucus /provides medium to facilitates the movement of the sperm It contains nutrients

2.2.3(a\ (70 74\ (1\ (b\ Criteria for marking of the graph: Criteria Mark allocation Histogram is drawn

2.3.1(a\ (b\ (Graafian\ follicle and Corpus luteum (Mark first TWO only\

2.3.2(a\ (b\ FSH Oestrogen OR LH OR FSH (1\

2.3.3The Graafian follicle keeps on producing oestrogen /fails to rupture OR The increased secretion of oestrogen stimulates the secretion of LH OR Excess production of FSH can cause the failure to ovulate

2.3The corpus luteum does not degenerate and keeps on secreting progesterone

2.4.1(a\ (b\ Spinal cord Pituitary gland /hypophysis (1\ (1\

2.4.2(1\

2.4Between the two hemispheres of the cerebrum (2\

2.4.4(a\ (b\ (c\ Part medulla oblongata which controls breathing

2.5.1rapid involuntary/automatic response to a stimulus (2\

2.5.2(a\ (b\ It ensures that the impulse is transmitted in one direction (Mark first ONE only\ It is important f or balance

2.5.3The impulse is transmitted from the receptor in the patellar tendon through the sensory neuron and the synapse

3.13. Degeneration /wasting away of nerve tissue Plaque/proteins formed around the nerve

3.1.3They ere all female

Q3— Section header —

3.2.1(a\ (b\ Kidney Endocrine system (1\ (1\

3.2.2It releases hormones directly into the blood and it is ductless

3.2.3Low salt levels are detected by receptor cells in the kidney Adrenal glands are stimulated to secrete

3.2.4The secretion of ADH will increase which will in crease the permeability of the renal tubules

3.3.1(a\ (b\ Thermoregulation Hypothalamus (1\ (1\

3.3(a\ (b\ Sweat gland Capillary /b lood vessel (1\ (1\

3.3.4

3.4.1(a\ (b\ Presence /absence of auxins Growth of lateral branches

3.4.2To ensure that the results are caused only by the presence of auxins which

3.4.3It acts as a control to show that the result s of Plant

3.4.4The presence of auxins slows down the growth of lateral branches OR The absence of auxins stimulated the growth of lateral branches

Topics Identified

Cell BiologyGeneticsHuman Physiology

Mark Allocation

Total150 marks

Paper information

SubjectLife Sciences

Year2023

SessionNovember

TypeMemo

PaperPaper 1

LanguageEnglish

Pages10

Downloads3

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start daySunday

Exam periodNovember 2023

Days since exam1,086

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

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Life Sciences Paper 1 (English) →

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Archived on7 September 2026

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