Life Sciences Paper 2 (English)

November 2015 — Grade 12 / Matric — Life Sciences

Past Paper 2015 Grade 12 English Life Sciences Hub →

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🎯 150 marks 📄 5 pages 📝 47 items found 📚 3 topics 🔑 1 key info

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Q1— Section header —

1.1Various options are provided as possible answers to the following questions. Choose the correct answer and write only the letter (A to D\

1.1\in the ANSWER BOOK , for example

1.1.10D.

1.1.1Cells that can differentiate into ny type of cell are called ...

1.1.2The diagram below shows a cell undergoing meiosis. he diagram above shows ...

1.1The DNA of different species only differ in the

1.1One strand of a DNA molecule has 60 adenine and 20 thymine molecules . How many adenine molecules are present in the double stranded DNA molecule?

1.1.5The diagram below shows the effect of three different types of antibiotic ( and on a single strain of bacterium growing on

1.1.6A trait that has a range of phenotypes is an example of ... continuous variation. discontinuous variation. complete dominance.

1.1In the most stable freshwater environments populations of Daphnia are almost entirely female and reproduce asexually. However, males are observed in low oxygen environments or when food

1.1Which ONE of the following shows possible alleles present in a gamete that is produced by the

1.1Which ONE of the following is a possible representation of the genotypes of the P

1.2Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to

1.2in the ANSWER BOOK

1.2.9Chromosomes that carry the same set of genes wo or more alternative forms of a gene at the same locus The structure responsible for pulling chromosomes to the poles of

1.3Indicate whether each of the descriptions in COLUMN I applies to ONLY ONLY

1.3the ANSWER BOOK COLUMN I COLUMN II

1.3.1Produced the first X ray pictures of DNA A: B: Watson Franklin

1.3.2An e xample of biotechnology A: B: Genetic modification Cloning

1.3Law of inheritance of acquired characteristics A: B: Darwin Lamarck

1.3ll the genes in all the chromosomes of a species A: B: Genome Genotype

1.4The diagram below shows a world map indicating four sites ( to \where hominid fossils , representing two different genera

1.4.4Which genus or (a\ Represents

1.5Scientists estimated the brain size of Australopithecus, Homo habilis Homo erectus

1.5.1ccording to the graph (a\ (b\ When did the first Australopithecus appear Which of the species s

1.5Give the size (in cm \of the: (a\ (b\ Largest brain of Australopithecus Smallest brain of

1.5State TWO types of evidence other than fossils that support the idea that all hominids evolved from a common ancestor. (2\

Q2— Section header —

2.1The di grams below represent the process of speciation in tortoises Over a period of time species and

2.1.2Explain why species continue to exist on island

2.2The father of a child can be determined by analysing blood groups. .2 .1

2.2Explain how an analysis of blood groups can be used to determine paternity

2.3.4Name the phase of meios is during which the process represented above takes place escribe the process of

2.4The extract and the diagram below provide information about a type of antelope called a Bongo.

2.4.2State TWO characteristics that help the Bongo to camouflage themselves in the dense jungle. Use your knowledge of natural selection and explain how the Bongo's ability to lay its

2.5The c haracteristics of organisms can be changed through selective breeding and the genetic engineering process

2.5.2State TWO similarities between the selective b reeding process and the genetic engineering

Q3— Section header —

3.1State why viruses that contain only RNA show more

3.2The questions below are based on nucleic acids.

3.2.3Tabulate THREE structural differences between DNA and RNA. State TWO uses of DNA profiling. Give TWO views a gainst the use of DNA profiling (7\

3.3.3Name the genotypes of individuals: (a\ (b\ What percentage of the males in this pedigree diagram is affected? Show ALL working.

3.4An investigation was done by G rade 12 learners to determine which chickens grow faste chickens that are

3.4.4 Formulate a hypothesis for this investigation. State the independent variable in this investigation. Calculate the percentage weight increase of the chickens that were

3.43. State THREE factors that the learner

Q4— Section header —

Topics Identified

Cell BiologyGeneticsEvolution

Mark Allocation

Total150 marks

Sections40 + 40 = 80 marks

Key Information

Websitewww.biologyreference.com · www.evolution.berkeley.edu

Paper information

SubjectLife Sciences

Year2015

SessionNovember

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages15

Downloads5

Examination context

Decade2010s

Years ago11y

SeasonSpring (SH)

Start dayThursday

Exam periodNovember 2015

Days since exam4,007

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.

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Corresponding marking memorandum

Marking memorandum available

Use the corresponding memorandum after completing the paper to review your answers and identify areas that require further revision. The memorandum shows the marking approach used by DBE examiners, including method-mark allocations.

Life Sciences Memo 2 (English) →

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File size435.4 KB

Pages15

Archived on7 September 2026

File age47d

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