KZN-Life-Sciences-Grade-10-March-2024-QP-and-Memo_hlayiso.com_.pdf

Downloaded from Stanmorephysics.com KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA NATIONAL SENIOR CERTIFICATE MARKS: 50 TIME: 1 Hour This question paper consists of 9 pages. Copyright Reserved Please Turn Over

Life sci March 2024 Common Test ownloaded from Stanmasephysias.com 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. Do ALL drawings in pencil and label them in blue or black ink. 7. Draw diagrams, tables or flow charts 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 may use a non-programmable calculator, protractor and a compass. 11. Write neatly and legibly. Copyright Reserved Please Turn Over

Life sci March 2024 Common Test ownloaded from Stanmasephysias.com SECTION A QUESTION 1 1.1 Various options are provided as possible answers to the following questions. Choose the correct answer and write only the letter (A to D) next to the question number (1.1.1 to 1.1.3) in your ANSWER BOOK, for example 1.1.3-D: 1.1.1 The basic unit of life is a... zygote cell protoplasm nucleus wen? 1 1.1.2 Which one of the following is the CORRECT regarding the deficiency disease of vitamin C? Night blindness Loss of appetite Scurvy Immune disorders 0QD>Y 1.1.3 The diagram below shows an enzyme activity Diagram R above represent... A anenzyme B_ enzyme-substrate complex C_ product D_ substrate (3 x 2) (6) Copyright Reserved Please Turn Over

Life sci March 2024 Common Test ownloaded from Stanmaxephysias.com 1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to 1.2.5) in your ANSWER BOOK. 1.2.1. The part of microscope that is used to bring specimen sharply into focus 1.2.2 An organelle that stores digestive enzymes 1.2.3 Carbohydrates made up of only two sugar units 1.2.4 Monomers of proteins 1.2.5 Inorganic compound required for thyroxin production (5x1) (5) 1.3 Indicate whether each of the statements in COLUMN | applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN II. Write A only, B only, both A and B, or none next to the question number (1.3.1 to 1.3.2) in the ANSWER BOOK. COLUMN | COLUMN II 1.3.1 Forms spindle fibres in an A: Centrosome animal cell during mitosis B: Centromere 1.3.2 Two or more elements A: Atom combined B: Compound (2 x 2) (4) Copyright Reserved Please Turn Over

Life sci March 2024 Common Test ownloaded from StanmaxepBysias.com 1.4 The diagram below shows a certain process taking place in plants and animal cells. A B High concentration Low concentration oe? eee eee 1.4.1 Identify the above process. (1) 1.4.2. State whether the process mentioned in QUESTION 1.4.1 is an active or a passive process? (1) 1.4.3. State whether the particles are likely to move from diagram A to B or (1) diagram B to A? 1.4.4 Give areason for your answer in QUESTION 1.4.3. (2) (5) [20] Copyright Reserved Please Turn Over

Life sci March 2024 Common Test ownloaded from Stanmasephysias.com SECTION B QUESTION 2 2.1 The diagrams below show some of the phases of mitosis. 2.1.1 Identify phase shown in diagram Z. (1) 2.1.2 Give ONE visible reason for your answer in QUESTION 2.1.1. (1) 2.1.3 Name the process that takes place in the phase shown in diagram X. (1) 2.1.4 Explain the importance of the process named in QUESTION 2.1.4. (2) 2.1.5 Describe the events that takes place in phase shown in diagram Y. (2) 2.1.6 How many chromosomes will be present in each cell of telophase? (1) (8) Copyright Reserved Please Turn Over

Life scit 2.2 A group of Grade 10 learners conducted an experiment to test for the presence of ownloaded from Stanmasephysias.com certain nutrients on different food. The apparatus was set up as follows. Test 1 Biuret solution ° — Colour A Solution X Test 2 Benedict's solution Colour B Solution Y 2.2.1 Name the nutrient tested for in: (a) Test 1 (b) Test 2 2.2.2 State the colour B for positive results in the above investigation? 2.2.3 List any TWO steps that were followed in the planning of the experiment above. 2.2.4 State TWO ways in which reliability of the experiment could be improved. Copyright Reserved March 2024 Common Test (1) (1) (1) (2) (2) (7) [15] Please Turn Over

Life sci March 2024 Common Test ownloaded from Stanmasephysias.com QUEATION 3 3.1 The diagram below shows an animal cell 3.1.1 Give the LETTER and NAME of the part that controls substances coming into and out of the cell. (2) 3.1.2 State ONE function of part B. (1) 3.1.3 Explain the role of part D to the cell. (2) 3.1.4 Explain the importance of part C in paternity testing of the child (2) (7) Copyright Reserved Please Turn Over

Life sci 3.2 Onions cells were investigated under different magnification to determine the most effective magnification. The bigger the magnification size the clearer the image: The table below shows the results: ownloaded from Stanmaxephysias.com Specimen Ocular lens Objective Total lenses magnification(x) A 10 10 100 B 10 (P) 40 Cc 10 40 (Q) 3.2.1 Write down the value of : (a) (b) 3.2.2 Draw a bar graph to show specimen A and B and total magnification. Copyright Reserved P Q March 2024 Common Test (1) (1) (6) (8) [30] GRAND TOTAL: 50

Downloaded from Stanmorephysics.com KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA NATIONAL SENIOR CERTIFICATE GRADE 10 Marks: 50 Copyright Reserved N.B This marking guideline consist of 6 pages. Please Turn Over

Life Sciences March 2024 Common Test Giwnloaded from Skanmeraphysies.can PRINCIPLES RELATED TO MARKING LIFE SCIENCES 1. If more information than marks allocated is given Stop marking when maximum marks is reached and put a wavy line and ‘max’ in the right-hand margin. 2. If, for example, three reasons are required and five are given Mark the first three irrespective of whether all or some are correct/incorrect. 3. If whole process is given when only a part of it is required Read all and credit the relevant part. 4. If comparisons are asked for but descriptions are given Accept if the differences/similarities are clear. 5. If tabulation is required but paragraphs are given Candidates will lose marks for not tabulating. 6 If diagrams are given with annotations when descriptions are required Candidates will lose marks. 7. — If flow charts are given instead of descriptions Candidates will lose marks. 8. If sequence is muddled and links do not make sense Where sequence and links are correct, credit. Where sequence and links are incorrect, do not credit. If sequence and links become correct again, resume credit. 9. Non-recognised abbreviations Accept if first defined in answer. If not defined, do not credit the unrecognised abbreviation but credit the rest of the answer if correct. 10 Wrong numbering If answer fits into the correct sequence of questions but the wrong number is given, it is acceptable. 11. If language used changes the intended meaning Do not accept. 12. Spelling errors If recognisable, accept the answer, provided it does not mean something else in Life Sciences or if it is out of context. 13. If common names are given in terminology Accept, provided it was accepted at the national memo discussion meeting. If only the letter is asked for but only the name is given (and vice versa) If units are not given in measurements 14. Candidates will lose marks. Memorandum will allocate marks for units separately. Copyright Reserved Please Turn Over

Life Sciences March 2024 Common Test Giwnloaded from Skanmaraphysies.camn 15. Be sensitive to the sense of an answer, which may be stated in a different way. 16. Caption Altillustrations (diagrams, graphs, tables, etc.) must have a caption. 17. Code-switching of official languages (terms and concepts) A single word or two that appear(s) in any official language other than the learners’ assessment language used to the greatest extent in his/her answers should be credited if it is correct. 18. Amarker that is proficient in the relevant official language should be consulted. This is applicable to all official languages. Copyright Reserved Please Turn Over

Life Sciences Giwnloaded from Skanmaraphysies.cann SECTION A QUESTION 1 1.1 11.1 BYv 1.1.2 Cvv 1.1.3 BYY 1.2 1.2.1 Fine adjustment knobv 1.2.2 lysosomesY 1.2.3 disaccharidesv 1.2.4 Amino acidsv 1.2.5 lodine 1.3 1.3.1 Aonlyvv 1.3.2 Bonlyyvv 1.4 1.4.1 Diffusion v 1.4.2 Passive process Vv 1.4.3 Ato BY 1.4.4. Diagram A has high concentration of particles /moleculesY particles/ molecules move from area of high concentration V to area of low concentration during diffusion Copyright Reserved March 2024 Common Test 2x3 (6) 1x5 (5) 2x2 (4) (1) (1) (1) (2) [20 Please Turn Over

Life Sci . "<"Bownloaded from Skanmateplyaiessccatd SECTION B QUESTION 2 2.1 2.1.1 Metaphase v 2.1.2. Chromosomes are lined at the equatorY (Mark the first ONE only) 2.1.3. DNA replication’ 2.1.4 It ensures that genetic material is doubledv so that it is shared equally amongst the daughter cells during mitosis” 2.1.5 The chrom C iblev As the ads of ¢ a ork become shorter and thickerY Nuclear me! 1 isappearY The centriole p e polesv Spindle fibres beq fc een them v Any we <i 2.1.6 4/four v 2.2 2.2.1 (a) Protein v (b) Glucose ¥ 2.2.2 Orange brown/ red-brownyv 2.2.3 -Decide on time/venue/placev -Decide on sample sizev -Decide on the type of foodv -Decide on the apparatus to be usedv -Decide on the chemicals to be used¥ (Mark the first TWO only) 2.2.4 -Increase sample size Vv Copyright Reserved -Repeat/do more testsv (Mark the first TWO only) March 2024 Common Test (1) (1) (1) (2) (2) (1) (8) (1) (1) (1) (2) (2) (7) [15] Please Turn Over

Life Sci St f - March 2024 C Test QUESTION 3 3.1 3.1.2-AY —-Cell membrane v (2) 3.1.2 Facilitates transport of large molecules within the cytoplasmv (1) (Mark the first ONE only) 3.1.3. Site of cellular respiration’ (2) Provide energy to the cellv 3.1.4 Part C/ nucleus contains DNA v That carries hereditary information’ Which can be used to compare father’s DNA and child’s DNAV Any (2) (7) 3.2 3.2.1 (a) P=4xv (1) 3.2.2 (b) Q = 400Xv (1) 120 5 Onion specimens A and B under total magnification 100 + | 0 r Speciman A Speciman B Specimens co o L Magnification (X) ey coz) =} —} nN o Rubric for marking the graph Feature Marks Correct type of graph (T) 1 Caption (C) 1 Correct labels with units in both Y & X-axis (L) 1 Correct scale in both Y and X — axis, with equal bars and width 1 between bars (S) Correct plotting (P) 1: 1 bar plotted 2: only two bars plotted correctly (6) [30] GRAND TOTAL [50] Copyright Reserved