Life Sciences Grade 12 P1 Eastern Cape Mock 2022 Memo

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE SENIOR SERTIFIKAAT KEREITE YA 12 LOETSE 2022 LIFE SCIENCES P1 TATAISO YA HO TSHWAYA MATSHWAO: 150 Tataiso ena e na le maqephe a 8.

Downloaded from hlayiso.com 2 LIFE SCIENCES P1 (EC/LOETSE 2022) MELAO-METHEO E AMANANG LE HO TSHWAYA LIFE SCIENCES 1. Haeba ho fanwe ka dintlha tse ngata ho feta a dimaraka tse fanweng Emisa ho tshwaya ha matshwao a hodimo a fihletswe ebe o beha mola wa wavy le 'max' ka lehlakoreng le letona la letsoho le letona. 2. Haeba, ho etsa mohlala, ho hlokahala mabaka a mararo mme ho fanwe ka a mahlano Tshwaya tse tharo tsa pele ho sa tsotelehe hore na kaofela kapa tse ding di nepahetse / di fosahetse. 3. Haeba porosese yohle e fanwe, ha ho hlokahala feela karolo ya yona Bala tsohle mme o fane ka dimaraka karolo e amehang. 4. Haeba ho botswa papiso empa ho fanwe ka ditlhaloso. Amohela haeba diphapano/ditshwano di hlakile. 5. Haeba ho etsa theyibole ho hlokahala, empa ho fanwe ka serapana Baithuti ba tla lahlehelwa ke dimaraka ka ho se kenye theyibole. 6. Haeba didayakeramo di fanwe moo ho hlokahalang ditlhaloso. Bahlahlobuwa ba tla lahlehelwa ke dimaraka. 7. Haeba ditjhate tsa phallo di fanwe bakeng sa ditlhaloso.Bahlahlobuwa bat la lahlehelwa ke dimaraka. 8. Haeba tatellano e sithabeditswe mme mahokela a sa utlwahale Moo tatellano le mahokela a nepahetseng, fana ka dimaraka. Ha tatellano le mahokela a fosahetse, o se ke wa fana ka dimaraka.Haeba tatellano le dikgokahano di nepahala hape, qalella ho fana ka dimaraka. 9. Dikgutsufatso tse sa tsejweng Amohela haeba e hlalositswe pele. Haeba e sa hlaloswa, o se ke wa fana ka dimaraka ka kgutsufatso e sa tsejweng, empa fana ka dimaraka karolong e setseng haeba e nepahetse. 10. Dinomoro tse fosahetseng Haeba karabo e dumellana le tatellano e nepahetseng ya dipotso, empa ho fanwe ka nomoro e fosahetseng, se ke wa amoheleha. 11. Haeba puo e sebedisitsweng e fetola moelelo o rerilweng Se ke wa amohela. 12. Diphoso tsa mopeleto Haeba e tsebahala, amohela karabo, ha feela e sa bolele ho hong ho Disaense tsa Bophelo kapa haeba e sa tsamaellane le maemo. 13. Haeba mabitso a tlwaelehileng a fanwe ho theminoloji (mantswe) Amohela, ha feela e amohetswe kopanong ya naha ya dipuisano ka tataiso ya ho tshwaya. 14. Haeba ho botsitswe tlhaku feela, empa ho fanwe ka lebitso feela (le ka tsela e fapaneng) Se ke wa fana ka dimaraka. Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com (EC/LOETSE 2022) LIFE SCIENCES P1 3 15. Haeba diyuniti di sa fanwa ho ditekanyo Baithuti ba tla lahlehelwa ke dimaraka. Tataiso ya ho tshwaya e tla fana ka matshwao bakeng sa di-yuniti ka thoko. 16. Ela hloko kutlwisiso ya karabo, e ka bewang ka tsela e fapaneng 17. Sehlooho Dipapiso tsohle (didayakeramo, dikerafo, di theibole jj) di tlameha ho ba le Sehlooho 18. Ho fetolela puong ya dipuo tsa semmuso (dipolelo le dikhopolo) Lentswe le le leng kapa a mabedi a hlahang puwo efe kapa efe ya semmuso ntle le puwo ya tekolo ya moithuti e sebelisitsweng haholo ho dikarabo tsa hae a lokela ho amohelwa, haeba a nepahetse.Motshwai ya tsebahalang ka puo ya semmuso o le lokela ho botswa. Sena se sebetsa lipuwong tsohle tsa semmuso. Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com 4 LIFE SCIENCES P1 (EC/LOETSE 2022) KAROLO YA A POTSO 1 1.1 1.1.1 A ✓✓ 1.1.2 A ✓✓ 1.1.3 B ✓✓ 1.1.4 D ✓✓ 1.1.5 D ✓✓ 1.1.6 C ✓✓ 1.1.7 D ✓✓ 1.1.8 A ✓✓ 1.1.9 A ✓✓ 1.1.10 C ✓✓ (10 x 2) (20) 1.2 1.2.1 Porolaktine ✓ 1.2.2 Maetosise ✓ 1.2.3 Reflekse akshene ✓ 1.2.4 Othonomike ✓nevase sistimo 1.2.5 Sinapse✓ 1.2.6 Kereniamo ✓ 1.2.7 Geseteishene ✓ 1.2.8 Homone e susumetsang thaeroksine ✓/ TSH 1.2.9 Osemorejuleishene ✓ 1.2.10 Khophase khalosamo ✓ (10 x 1) (10) 1.3 1.3.1 A feela ✓✓ 1.3.2 Ha e yo ✓✓ 1.3.3 A feela ✓✓ (3 x 2) (6) 1.4 1.4.1 (a) Haephothalamase ✓ (1) (b) Phijuithari ✓tshwelesa (1) (c) ADH ✓/Antijiurethike homone (1) (d) Renale tjhubule ✓ /kholekthing tjhubule/distale khonvoluthede tjhubule (1) 1.4.2 E dumella metsi ho feta ✓ (1) 1.4.3 Ho fufulelwa✓/Ho hema. ( E le nngwe) (Tshwaya e le NNWE ya pele) (1) 1.5 1.5.1 (a) Mootho nyurone ✓ (1) (b) Sensari nyurone ✓ (1) 1.5.2 Mmele wa sele ✓ (1) 1.5.3 (a) A ✓ Mayoline shife ✓ (2) (b) C ✓ Didendraete ✓ (2) 1.5.4 II ✓ (1) KAKARETSO YA KAROLO YA A: 50 Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com (EC/LOETSE 2022) LIFE SCIENCES P1 5 KAROLO YA B POTSO YA 2 2.1 2.1.1 T✓ DAYAKERAMO YA I DAYAKERAMO YA II E na le sevikse e le nngwe ✓ E na le disevikse tse pedi ✓ E na le dipopelo tse pedi ✓ E na le dipopelo tse pedi/yutheri ✓ (Tshwaya tsa pele tse pedi) (Any 2 x 2 + 1) (5) 2.1.2 - Boimana ba ekthopike(ectopic pregnancy) ✓ - Intha- yutherine fithale restrikshene(Intra-uterine foetal growth restriction) ✓ - Polasentheishene e sa phethahalang ✓ - Foetal malpositionfithase e sa dulang hantle ✓ (Leha e le dife tse 2 x 1) (2) (Tshwaya tsa pele tse pedi) 2.1.3 - Ditekanyo tse phahameng tsa porojesterone ✓ - Thibela tshwelesa ya phijuithari ✓ - ho ntsha FSH ✓ - Ka hona, ha ho follicle e ntjha e tla hlaha ✓ - me ha ho ovum e tla lokollwa ✓/ ovuleishene e etsahalang - hore fethiliseishene e be teng hape ✓ (Leha e le dife tse 4 x 1) (4) 2.2 - Embriyo e hlahisa lera le ka ntle, khorione le lera la ka hare, amnione ✓ - Amnione e etsa sekoti(khavithi) ✓ - e kwahetseng fuluwiti ya amnione ✓ - Divillus tsa khorione ✓tse hlahang ho khorione - mmoho le endometriamo ✓ - e etsa plasentha ✓ - Tjupu e bitswang mokgubu(ambilkhale khode) ✓ e kgomaretsa - fithase ho plasentha ✓ - Mokgubu (ambilikhale khode) o na le ambilikhale athari ✓ - le ambilikhale veine ✓ (Leha e le dife tse 8 x 1) (8) 2.3 2.3.1 - Methapo ya madi ✓ (1) 2.3.2 - Methapo ya madi/ karolo ya A e ya sesefala( khonstrikta) ✓/vasokhonstrikshenee ya etsahala - e etsa hore madi a fokolang a phallele letlalong ✓ - therefore, less heat is lost ka hoo mocheso o fokolang o wa lahleha ✓ho ya ho tikoloho (3) 2.3.3 - ho tla ba le ho fokotseha/bosiyo ba oksijene le ✓ - tlulukhose tse yang letlalong ✓ - ho baka ho theoha/ hoba siyo ha methabolisimo ✓/ resipireishene ya disele/mocheso o fokolang (3) 2.3.4 - Tlhahiso e fokolang/bosiyo ba mofufutso bo baka evaphoreishene e fokolang ✓/ ho phola ho fokolang - e etsang ho nyoloha ha themphereitjhara ya mmele ✓/ motjheso o phahameng haholo - Hona ho baka denetjharing ya dienzaeme ✓ - E etsang hore methabolismo porosese e emise which will cause ✓ (4) Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com 6 LIFE SCIENCES P1 (EC/LOETSE 2022) 2.4 2.4.1 - Mahlo a kwalehile ✓/ bofofu - Ha ho masiba✓ - Ha e tsamaye ✓ (Leha e le dife tse 2 x 1) (Tshwaya tse PEDI tsa pele) (2) 2.4.2 - Ha e fumanwe ke dipredeitha tse ngata ✓ - kaha di keke tsa di balehela - Ka hoo, e eketsa menyetla ya ho phela ✓ (3) 2.4.3 - Bongata ba youku boy a ekeketseha hodinonyana tse prekhoshea ✓ ho feta ho altrishea - Hobane di hloka dinyutrientse tse ngata ✓ - Hore di hlahe di hodile ka ho feletseng ✓ (3) 2.5 2.5.1 (a) Supolimente ya zinke ✓ (1) (b) Ditekanyo ts testosterone mading ✓ (1) 2.5.2 - Ditekanyo tsa testosterone mading di ile tsa mejarwa ✓ - pele ho sebediswa sapolimente ya zinke ✓ (2) 2.5.3 - Mofuta wa sehlahiswa sa zinki ✓ - Khonsentreishene ya zinke ✓ - Volumo ya zinke ✓ - Mokgwa wa ho sebedisa zinke ✓ - Nako ya ho sebedisa sapolimente ya zinke ✓ (2) (Le ha e le dife tse 2 x 1) (Tshwaya tse pedi tsa pele) 2.5.4 - Ho sebedisitswe ba batona ba 60 ✓ - Patlisiso e entswe ka nako ya dibeke tse 12 ✓/ dibeke tse 6 (Le ha e le di fe tse 2 x 1) (2) (Tshwaya tse PEDI tsa pele) 2.5.5 Sapolimente ya zinki e eketsa ditekanyo tsa zinke ✓✓ (2) 2.5.6 - E susumelletsa tlhahiso ya disele tsa sepemo ✓ - E susumelletsa phubathi ✓ (Tshwaya tse PEDI tsa pele) (2) [50] Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com (EC/LOETSE 2022) LIFE SCIENCES P1 7 QUESTION 3 3.1 3.1.1 Cochlea (1) 3.1.2 Transmits impulses to the brain ✓ (1) (Mark first ONE only) 3.1.3 To prevent echo ✓ (1) 3.1.4 - Sudden changes in the speed and direction of head movement ✓ - stimulates the cristae ✓ - in the semi-circular canals ✓ - A change in the position of the head ✓ - stimulates the maculae ✓ - in the utriculus and sacculus ✓ - to send the impulse ✓ - via the auditory nerve ✓ - to be interpreted in the cerebellum ✓ - Cerebellum sends impulses to skeletal muscles ✓ to restore balance (Leha e le dife tse 7 x 1) (7) 3.1.5 - No vibrations will occur ✓ - and no pressure waves will be created in the inner ear ✓ - Organ of Corti/hair cells will not be stimulated ✓ - Therefore, no impulses will be sent to the cerebrum ✓ (4) 3.2 3.2.1 To expose leaves to light for photosynthesis ✓ (1) (Mark first ONE only) 3.2.2 Geotropism ✓/ gravitropism (1) 3.2.3 To eliminate the effect of gravity ✓/ expose the stem to gravity on all sides (1) 3.2.4 - Auxins will move to the lower side of the growing tip ✓ - There will be a high concentration of auxin in the lower side ✓ stem - which will stimulate cell elongation ✓/ growth - Therefore, the lower side will grow faster ✓ - This will cause the stem to bend upwards ✓ (5) 3.2.5 - The auxin ✓ - produced at the tip of the stem ✓ will be removed - Therefore, stem will not grow ✓ - Lateral branches will develop ✓ - In the absence of apical dominance ✓ (Any 4 x 1) (4) 3.2.6 Gibberellins ✓ (1) Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla

Downloaded from hlayiso.com 8 LIFE SCIENCES P1 (EC/LOETSE 2022) 3.3 3.3.1 Cornea ✓ (1) 3.3.2 - The circular muscles relax ✓ - While the radial muscles contract ✓ - to cause the pupil to dilate ✓ (Leha e le dife tse 2 x 1) (2) 3.3.3 - Muscles in Part A/ ciliary muscles will contract ✓ - Causing the suspensory ligaments to slacken ✓ - Resulting in the lens becoming more rounded ✓/convex (3) 3.3.4 (a) C✓ (1) (b) - If the drainage channels are fully blocked ✓ - the excess fluid accumulates in the eye ✓ (2) (c) - When the photoreceptors are damaged the stimuli cannot be converted to nerve impulses ✓ - The damage to optic nerve prevents the transmission nerve impulses ✓ - to the cerebrum for interpretation ✓ (3) 3.4 3.4.1 (a) Kidney ✓ (1) (b) Aldosterone ✓ (1) 3.4.2 (a) - Salt levels in the blood decreases ✓ - Because less/ no aldosterone is secreted ✓ - Therefore, renal tubules are less permeable ✓ - Less salt is reabsorbed into blood ✓ - since salt levels are above normal in blood ✓ (5) (b) - There will be less salt in the urine ✓ - Because renal tubules are more permeable to salt ✓ - More salt is reabsorbed into blood ✓ - Since salt levels were below normal in the blood ✓ (4) [50] KAKARETSO YA KAROLO YA B: 100 KAKARETSO E FELLETSENG: 150 Difuperweng tsa pampiring ena di se sebediswe ntle ho tumello Phetla