🎯 Learning Objectives🎯 Objektif Pembelajaran
Identify and label cell structures from micrographsMengenal pasti dan melabel struktur sel daripada mikrograf
State functions of all cell organellesMenyatakan fungsi semua organel sel
Compare animal and plant cellsMembandingkan sel haiwan dan sel tumbuhan
Explain life processes in unicellular organismsMenerangkan proses hidup organisma unisel
Describe cell specialisation and organisationMenerangkan pengkhususan sel dan organisasi
🔬 Animal Cell Organelles🔬 Organel Sel Haiwan
| OrganelleOrganel | FunctionFungsi |
|---|---|
| NucleusNukleus | Controls cell activities; contains DNAMengawal aktiviti sel; mengandungi DNA |
| MitochondriaMitokondria | Cellular respiration; generates ATPRespirasi sel; menjana ATP |
| RibosomeRibosom | Protein synthesisSintesis protein |
| RERJEK | Transports proteinsMengangkut protein |
| SERJEL | Synthesises lipidsMensintesis lipid |
| Golgi ApparatusJasad Golgi | Processes and packages proteinsMemproses dan membungkus protein |
| LysosomeLisosom | Digestion with enzymesPencernaan dengan enzim |
Fig 1: Animal Cell StructureRajah 1: Struktur Sel Haiwan
Fig X: Labeled Animal CellRajah X: Sel Haiwan Berlabel
Fig Y: Labeled Plant CellRajah Y: Sel Tumbuhan Berlabel
🌱 Plant vs Animal Cell🌱 Sel Tumbuhan vs Sel Haiwan
| FeatureCiri | Plant CellSel Tumbuhan | Animal CellSel Haiwan |
|---|---|---|
| Cell WallDinding Sel | ✅ Present (cellulose)✅ Ada (selulosa) | ❌ Absent❌ Tiada |
| ChloroplastKloroplas | ✅ Present✅ Ada | ❌ Absent❌ Tiada |
| VacuoleVakuol | One largeSatu besar | Many smallBanyak kecil |
| CentrioleSentriol | ❌ Absent❌ Tiada | ✅ Present✅ Ada |
Fig 2: Plant vs Animal Cell ComparisonRajah 2: Perbandingan Sel Tumbuhan dan Sel Haiwan
🔬 Cell Specialisation🔬 Pengkhususan Sel
| Cell TypeJenis Sel | AdaptationPenyesuaian | FunctionFungsi |
|---|---|---|
| Red Blood CellSel Darah Merah | Biconcave, no nucleusCakera bikonkaf, tiada nukleus | Transport O₂Mengangkut O₂ |
| Sperm CellSel Sperma | Flagellum, many mitochondriaFlagelum, banyak mitokondria | FertilisationPersenyawaan |
| Root Hair CellSel Rambut Akar | Long projectionUnjuran panjang | Absorb waterMenyerap air |
| Guard CellSel Pengawal | Kidney shapeBentuk buah pinggang | Control stomataMengawal stoma |
⚡ Quick Check
⚡ Semakan Cepat
Which organelle is the "powerhouse" of the cell?Organel manakah yang menjadi "powerhouse" sel?
🇲🇾 Malaysian Context
🇲🇾 Konteks Malaysia
Thalassemia is a genetic disorder affecting red blood cells — common in Malaysia. Genetic counseling is available at major hospitals.Talasemia ialah penyakit genetik yang menjejaskan sel darah merah — biasa di Malaysia. Kaunseling genetik tersedia di hospital utama.
SPM 2022 Paper 2
SPM 2022 Kertas 2
Explain why muscle cells have more mitochondria than skin cells. [4 marks]Terangkan mengapa sel otot mempunyai lebih banyak mitokondria daripada sel kulit. [4 markah]