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BiO F4 bab 15 P2

Gametogenesis Manusia

QuestionAnswer
Apakah yang dimaksudkan dgn Gametogenesis? Proses pembiakan sel pembiakan(gamet)
Apakah itu Gonad? testis=L@Ovari=P
Berikan maksud Spermatogenesis Proses pembentukan sperma yg berlaku dlm tubul seminiferus
Huraikan Spermatogenesis scra ringkas 1)Stiap tubul Sem trdiri drpd sel germa primordium 2)Sel germa Prim mnjalani pmbhagian sel utk mnghasilkn sperma 3)Sel Sertoli-pd dnding tubul Sem-mmbekalkn nutrien spnjng proses 4)Sprma diangkut dri tubul Sem->epididimis->kluar mlalui duktus sprma
Apakah yng merangsang Proses spermatogenesis? Hormon perangsang folikel(FSH)&testosteron @Proses Spermatogenesis juga dibantu oleh hormon Peluteinan(LH) yg mrangsang rmbesan testosteron di testis
Tuliskan kronologi proses pembentukan sperma oleh sel germa primordium (Part 1) 1)Fasa pmbahagian~Sel germa Prim mbhagi scra mitosis utk mnghasilkn bnyk spermatogonium yg 2n~Spermatogonium brkembang mnjadi spermatosit primer 2n 2)Fasa Prkembangan~Stiap spermatosit mbhagi scra meiosis I utk mnghasilkn 2 spermatosit skunder (n)
Tuliskan kronologi proses pembentukan sperma oleh sel germa primordium (Part 2) 3)Fasa Kematangan-Stiap spermatosit skunder mbhagi scra meiosis II utk mnghasilkn 2 spermatid yg (n)~Spermatid mnjalani pembezaan&pngkhususan utk membentuk sperma
Apakah itu Oogenesis? Proses pembentukan oosit sekunder/gamet betina !Oogenesis brmula dlm ovari seorng perempuan sblum dilahirkn
Jelaskan Oogenesis sebelum kelahiran (Part 1) 1)Sel germa Primordium mnjalani pmbhagian mitosis brulang kali bg mnghasilkn oogonium yg diploid 2)Oogonium brkembang mnjadi oosit primer yg dislaputi-1/lebih lapisan sel folikel membntuk foliker primer~prkmbngn folikel dirngsang oleh hormon (FSH)
Apakah yng berlaku pd Oogenesis semasa fetus berkembang (Part 2) Oosit primer mnjalani meiosis tetapi brhenti pd pringkat profasa I spanjang prkembngan fetus
Apakah yg berlaku pd Oogenesis smasa bayi dilahirkn (Part 3) 1) Bayi P sudah punyai brjuta2 oosit primer yg kekal dlm pringkat profasa I meiosis I-Bil ini akn kurang pd thp akil baligh 2)Apabila akil B,oosit primer truskn meiosis I-mbntuk oosit skunder&jasad kutub pertama
Mengapakah Oosit sekunder berhenti pada metasa II smasa Meiosis II? (Part 4) 1)Jasad kutub pertama mlengkapkn meiosis II&membentuk 2 jasd kutub kedua 2)Lapisn folikel mnylaputi oosit skunder=Folikel skundr~brkembng mnjadi Folikel Graaf(FG)~brkembng mnghasilkan estrogen 3)Proses ovulasi berlaku slps perkembangan FG
Apakah itu Ovulasi (Part 5) FG yg matang mnghampiri permukaan Ovari lalu membebaskn Oosit skunder ke dlm tiub Falopio
Habiskan Oogenesis (Part 6) Oosit skunder mlengkpkan meiosis II skiranya sperma mnembusi oosit skunder~Proses meiosis II mnghasilkn ovum (n)&1 jasad kutub(n)~Persnyawaan antara nuleus ovum&nukleus sperma mnghasilkn zigot(2n)-ksmua jsd kutub mrosot&disingkirkn dri ovari
Apakah yng berlaku kpd bhgian folikel yg trtinggal?(Part 7) slps ovulasi, bhgian folikel trtinggal bentuk korpus luteum-trus brkmbang&mrembeskn estrogen&progesteron~Korpus luteum&oosit skundr merosot lalu disingkirkn brsama haid
Apakah perbezaan antara sperma dan Oosit skunder dari segi struktur? Sperma-(Kepala,Bhgian Tengah,Ekor)~Kepala ada nukleus~bhgian T ada bnyk mitokondrion-jana tenaga-sperma berenang ke Tiub F Oosit 2nd-1 sel besar yg dikelilingi oleh jeli&sel2 folikel~Kesluruhan Oosit 2nd&sel2 folikel membntuk folikel Graaf
Bandingkan Spermatogenesis dan Oogenesis *Proses gametogenesis yg berlaku dlm organ pembiakan *Mnghasilkn gamet yg brsifat haploid&trlibat dlm prsnyawaan
Bezakan Spermatogenesis dan Oogenesis Spermato~dlm testis~Spermatogonium(2n) mnghasilkn 4 sperma(n) stlh mnjalani meiosis Oogenesis~dlm ovari~Oogonium(2n) mnghasilkn 1 oosit skundr(n) brfungsi&3 jsd kutub yg X fungsi stlh meiosis
Created by: Enbos
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