# Life Sciences Grade 12 KZN March 2016 Paper & Memo > Grade 12 Life Sciences question paper and memo from the KZN March 2016, 12 pages. Read online or get the free PDF download. - Page: https://www.hlayiso.com/library/life-sc-march-qp-and-memo-2016-gr12/294860ff-b8c1-4c6c-9dca-efb30f373681 - Updated: 2026-09-27 - Subject: Life Sciences - Grade: Grade 12 - Document type: Question paper and memo - Year: 2016 - Exam period: KZN March - Curriculum: CAPS - Pages: 12 Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 12](https://www.hlayiso.com/library/grade-12) › [Life Sciences](https://www.hlayiso.com/library/grade-12/life-sciences) › [Life Sciences Grade 12 KZN March 2016 Paper & Memo](https://www.hlayiso.com/library/life-sc-march-qp-and-memo-2016-gr12/294860ff-b8c1-4c6c-9dca-efb30f373681) ## About this document Life Sciences · Grade 12 · KZN March · 2016. Question paper and memorandum, 12 pages. Read online or download the PDF. Read it free online on the page above; download the PDF from there. ## Document text Text extracted from the PDF. Layout, diagrams and tables may not survive extraction. ### Page 1 Basic Education REPUBLIC OF SOUTH AFRICA i LIFE SCIENCES i COMMON TEST aa MARCH 2016 KwaZulu-Natal Department of Basic Education NATIONAL SENIOR CERTIFICATE GRADE 12 MARKS: 60 TIME : 1 hour This question paper consists of 8 pages. Copyright Reserved M3 Please turn over ### Page 2 Downloaded from hlayiso.com NSC Life Sciences Common Test March 2016 INSTRUCTIONS AND INFORMATION Read the following instructions carefully before answering the questions: 1. Answer ALL the questions. 2. Write ALL the answers in the ANSWER BOOK. 3. Start the answers to EACH question at the top of a NEW page. 4. Number the answers correctly according to the numbering system used in this question paper. 5. Present your answers according to the instructions of each question. 6. Make ALL drawings in pencil and label them in blue or black ink. ( ) 7. Draw diagrams, flow charts or tables only when asked to do so. 8. The diagrams in this question paper are NOT necessarily drawn to scale. 9. Do NOT use graph paper. 10. You must use a non-programmable calculator, protractor and a compass where necessary. 11. Write neatly and legibly. Copyright Reserved Please turn over ### Page 3 Downloaded from hlayiso.com Life Sciences Common Test March 2016 NSC SECTION A QUESTION 1 1.1. Various possible options are provided as answers to the following questions. Choose the correct answer and write only the letter (A - D) next to the question number (1.1.1 - 1.1.5) in the answer book, for e.g. 1.1.6 D. 1.1.1. The following statements may / may not occur when an mRNA strand is formed. (i) DNA replicates (ii) DNA unwinds (iii) | DNA acts as a template (iv) | MRNA is formed on the complementary strand of DNA (v) RNA nucleotides pair off with the DNA molecule Which of the following is correct when an mRNA strand is formed? A. (ii); (ili); (v) B. (i); (ii); (ii); (iv); (v) Cc. (ii); (iii); (iv) D. (i); (tii); (v) 1.1.2 Which ONE of the following is CORRECT with regard to the structure of DNA and RNA? RNA is double-stranded and DNA is single-stranded. DNA forms a double helix while RNA does not. RNA contains deoxyribose sugar while DNA contains ribose sugar. RNA is a very long molecule while DNA is a short molecule. GDOW>PY 1.1.3 How many amino acids make up a portion of a protein if the number of nitrogenous bases on the DNA molecule that codes for that portion of the protein is 120? A. 3 B. 20 Cc. 60 D. 420 Copyright Reserved Please turn over M3 ### Page 4 Life Sciences NSC Downloaded from hlayiso.com 1.1.4. The DNA profiles shown below are from a family with four children. PARENT | PARENT | CHILD 1 | CHILD 2 | CHILD 3 | CHILD 4 1 2 been a al De | a | a a a eee 0 | Se bel a Leal bal a a a a [eel Le el be a mn a a | ] a — | enna! ee | a a ee Which ONE of the children in the family is adopted? GCoOWP NAR 1.1.5 The difference between spermatogenesis and oogenesis is that ... A. all 4 cells formed in both become haploid sperm and ova. only 1 haploid sperm and 4 haploid ova is / are formed, haploid ovum. B. Cc. 4 cells become haploid sperm cells and only 1 cell forms a D 4 diploid sperm cells and 1 diploid ovum is / are formed Copyright Reserved M3 (5 x 2) Common Test March 2016 (10) TOTAL QUESTION 1: [10] TOTAL SECTION A: [10] Please turn over ### Page 5 Downloaded from hlayiso.com Life Sciences Common Test March 2016 NSC SECTION B QUESTION 2 2.1. The diagram below represents a nucleic acid. Zz 2.1.1 Identify: ) (a) X (1) (b) Z (1) 2.1.2 Give TWO reasons why DNA replication is important in cells. (2) 2.1.3 During what phase of the cell cycle does DNA replication take place? (1) 2.1.4 Identify the nitrogenous base, labelled W, in the diagram. (1) 2.1.5 Describe the type of error at V on the diagram. (2) (8) Copyright Reserved Please turn over M3 ### Page 6 Downloaded from hlayiso.com NSC Life Sciences Common Test March 2016 2.2. The diagrams below represent part of the process of protein synthesis. Arginine Lysine Leucine Valine Molecule X Organelle Y Part of process of protein synthesis 2.2.1 Name the process that is represented in the diagram (1) 2.2.2 Identify each of the following molecules: (a) X (1) (b) Z (1) 2.2.3. Give each of the following: (a) The codon for lysine. (1) (b) — The anticodon for valine. (1) (c) DNA base triplet for arginine if the anticodon for it is UCA. (1) 2.2.4 Ifthe next three bases (to the right) on molecule Z is UUC then what will the next amino acid in the chain be? (1) (7) TOTAL QUESTION 2: (15) Copyright Reserved Please turn over M3 ### Page 7 Downloaded from hlayiso.com NSC Life Sciences Common Test March 2016 QUESTION 3 3.1. The diagram below represent a phase of the process of meiosis. 3.1.1 How many chromosomes will be present in this cell at the end of the cell division? (1) 3.1.2 (a) | Name the phase of meiosis that occurs immediately before the phase shown in the diagram. (1) (b) Describe events that take place in the phase of meiosis identified in QUESTION 3.1.2(a). (2) 3.1.3 State TWO ways in which genetic variation is introduced during meiosis. (2) 3.1.4. The process shown in the diagram produces male and female gametes in a human being. Describe the process involved when these gametes fuse during sexual reproduction. (4) (10) Copyright Reserved Please turn over M3 ### Page 8 Downloaded from hlayiso.com Life Sciences Common Test March 2016 NSC 3.2. The information provided below explains how seahorses reproduce. The reproductive process begins when a male and a female seahorse do daily pre-dawn dances, intertwining their tails and swimming together. Eventually they engage in a true courtship dance, which can last as long as eight hours. It ends with the female depositing her eggs in the male's pouch which is on his stomach. The eggs are then fertilized in the dad's pouch. The eggs hatch in the pouch. The father cares for the young in his pouch as they grow, regulating the water salinity in the pouch to prepare them for life in the sea. When the tiny seahorses are ready to be born, the male undergoes muscular contractions to expel the young, known as "fry," from the pouch. The fry then swim away to live on their own. Adapted from :news.nationalgeographic.com 3.2.1 List THREE reproductive strategies used by seahorses. (3) 3.2.2 Explain ONE way how the seahorses improve the chances that the eggs will be successfully fertilized. ; (2) (5) TOTAL QUESTION 3: (15) SECTION C QUESTION 4 Describe the role of hormones in the ovarian and uterine cycles when a woman falls pregnant. NOTE: NO marks will be awarded for answers in the form of flow. charts or diagrams. 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There is | logical sequence. Ovarian cycle and NO irrelevant Uterine cycle 7/11 - information provided. Pregnancy 3/6 € ) | Mark 4 4 4 ak we * *Copyrigth reserved TOTAL QUESTION 4: — [20] TOTALSECTIONC: — [20] GRAND TOTAL: [60] ### Page 12 Downloaded from hlayiso.com ## Related documents - [LIFE SC P1 GR12 S16 MEMO ENG](https://www.hlayiso.com/library/life-sc-p1-gr12-s16-memo-eng/4630878b-8cd1-4138-9bfb-f01031ac7116) — Life Sciences · Memo · 2016 · Eng - [LIFE SCIENCES P2 GR12 SEPT2016 QP Engl FINAL](https://www.hlayiso.com/library/life-sciences-p2-gr12-sept2016-qp-engl-final/660dff8f-a299-49ec-8bcf-9bdb39099fa3) — Life Sciences · QP · 2016 - [Lfsc Memo Eng Jun2016](https://www.hlayiso.com/library/lfsc-memo-eng-jun2016/2c8d65c6-f546-40a9-a710-986b0ea44646) — Life Sciences · Memo · 2016 · Eng - [Grade 12 NSC Life Sciences P1 Preperatory 2016 Possible Answers](https://www.hlayiso.com/library/grade-12-nsc-life-sciences-p1-preperatory-2016-possible-answers/50ce4246-0838-4cbe-b09f-90f3db8d2e0c) — Life Sciences · Memo · 2016 - [Grade 12 NSC Life Sciences P1 10832 (Afrikaans) Preperatory 2016 Question Paper](https://www.hlayiso.com/library/grade-12-nsc-life-sciences-p1-10832-afrikaans-preperatory-2016-question-paper/f3d96818-aad0-4820-91c5-b7b9cea1287f) — Life Sciences · QP · 2016 · Afr - [Life Sciences P1 May June 2016 Memo Afr](https://www.hlayiso.com/library/life-sciences-p1-may-june-2016-memo-afr/80ae57fa-61cd-4936-b62f-64e842dcda27) — Life Sciences · Memo · 2016 · Afr ## More from Grade 12 Life Sciences - [Life Sciences Grade 12 NSC P2 MEMO September 2025 Free State](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p2-memo-september-2025-free-state/470ae841-15a4-4ab3-a87b-abd2294edc20) — Memo · 2025 - [Life Sciences Grade 12 NSC P2 MEMO September 2025 Gauteng](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p2-memo-september-2025-gauteng/bbdf9d27-c483-4cd4-af9f-287e699f482e) — Memo · 2025 - [Life Sciences Grade 12 NSC QP March 2025 KZN](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-qp-march-2025-kzn/b1598f8e-58e0-4c09-b513-b9f61ae73c47) — QP · 2025 - [Life Sciences Grade 12 NSC P2 MEMO September 2025 KZN](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p2-memo-september-2025-kzn/f412416e-57d1-473d-886a-87c9fbb8823c) — Memo · 2025 - [Life Sciences Grade 12 NSC P2 MEMO September 2025 Mpumalanga](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p2-memo-september-2025-mpumalanga/17b4cc42-641c-4d7d-9c53-6bac113ce83c) — Memo · 2025 - [Life Sciences Grade 12 NSC P1 QP September 2025 Mpumalanga](https://www.hlayiso.com/library/life-sciences-grade-12-nsc-p1-qp-september-2025-mpumalanga/be917127-6071-4190-b900-3c475d5bfdd4) — QP · 2025 ## Collection - [Grade 12 past papers](https://www.hlayiso.com/grade-12/past-papers) --- Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. 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