Life Sciences Memo 1 (English)

May-June 2019 — Grade 12 / Matric — Life Sciences

Memo 2019 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 10 pages 📝 37 items found 📚 4 topics

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Questions — A Preview of What to Expect in the Document

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Q1— Section header —

1.1.9x 2\

1.2.1Spindle fibres /spindle threads

1.2.2Maculae

1.2.3Anti diuretic hormone ADH

1.2.4Methane /CH

1.2.5Aquifer

1.2.6Medulla oblongata

1.2.7Homeostasis

1.2.8Chorion

1.2.9Acrosome (9\

1.3.3B only B only Both A and B (3 x 2\ (6\

1.4(a\ (b\ (c\ Sclera Ciliary /ciliary muscle (1\ (1\

1.4.4Pupillary mechanism Iris Near vision will be blurred Only distant objects will be clearly

1.5.1(a\ (b\ (c\ (d\ Pituitary gland ypophysis Graafian follicle Ovulation

1.5emain low /decrease (1\

1.5.3Stimulates ovulation Stimulates the development of the corpus luteum (Mark first ONE only\ Any (1\ (6\

1.6.1Black (Mark first ONE only\

1.6(a\ (b\ They c onstrict /vasoconstriction occurred Less blood flowed in the blood vessels The sweat glands became less active ess sweat

1.6.4Hypothalamus The whole body will appear black /black and grey There will be no white areas (Mark first ONE only\ Any (1\ (5\

Q2— Section header —

2.1.3Telo phase I MARKING GUIDELINE Only t wo gametes drawn amete contains 2 chromosomes The chromosomes are unreplicated (

2.2.3Phototropism The same species of plant was used in each set Identical clinostats were used in each set The same period of time /5 weeks was used for each set Each apparatus was placed in a box with a single opening

2.2(a\ (b\ (1\ (1\

2.2The a uxins move away from the light /were destroyed by the light

2.3.4

2.4.1(a\ (b\ Auditory nerve Eustachian tube

2.4(a\ (b\ and C (Mark first TWO only\ and F (Mark first TWO only\ (2\

2.4rommets will be inserted in the tympanic membrane Antibiotics (Mark first ONE only\ Any Auditory canal The ear

3.1.1(a\ (b\ (c\ Testis Epididymis Scrotum (1\ (1\ (1\

3.1.3Under the influence of testosterone iploid cells /germinal epithelium in the eminiferous tubules of the testis ndergo meiosis o form haploid

3.1.4(a\ (b\ There will be no sperm in the semen efore no fertilisation can take place The fluid part of the semen will still be produced by the accessory glands /seminal vesicles/prostate gland/

3.2.4All eople should have enough food The food should be nutritious /of good quality and be accessible at all times Any Use fertilisers

Q3— Section header —

3.3.4(Mark first TWO only\ Any The scar tissue may partially block the Fallopian tube preventing the embryo from reaching the ut erus

3.4Biological control /example Mechanical control /example Chemical control /example (Mark first TWO only\ Any The alien plants block out sunlight

Q4— Section header —

Topics Identified

Cell BiologyGeneticsPhotosynthesisRespiration

Mark Allocation

Total150 marks

Sections40 = 40 marks

Paper information

SubjectLife Sciences

Year2019

SessionMay-June

TypeMemo

PaperPaper 1

LanguageEnglish

Pages10

Downloads4

Examination context

Decade2010s

Years ago7y

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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