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bài 3 điều hòa hoạt động gen

bài 3. điều hòa hoạt động gen

bài 3. điều hòa hoạt động gen

... BÀI 3 – SH 12 Lê Hoài Vũ I. KHÁI NIỆM • Thế nào là điều hòa hoạt động của gen? • Tại sao gene lại có sự đều hòa hoạt động? • Các mức độ điều hòa hoạt động của gen? II. CƠ CHẾ ĐIỀU HÒA HOẠT ... phần của operon không? 2. Cơ chế điều hòa • Gene được điều hòa khi có yếu tố nào? • Gene được điều hòa như thế nào nếu có mặt của lactose? • Gene được điều hòa như thế nào nếu có mặt của lactose? ... không? Sự điều hòa ở mô hình operon Triptophan có giống như mô hình operon lac không? b. Gen tạo tARN mở đầu và gen tạo tARN kết thúc. c. Gen cấu trúc và gen vận hành. d. Gen điều hòa gen cấu...
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Bài 3 : Điều hòa hoạt đông gen 12 NC ( Upload lại )

Bài 3 : Điều hòa hoạt đông gen 12 NC ( Upload lại )

... quát về điều hoà hoạt động I- Khái quát về điều hoà hoạt động gen : gen :  Điều hoà hoạt động gen chính là điều hoà lượng Điều hoà hoạt động gen chính là điều hoà lượng sản phẩm của gen tạo ... I- KHÁI QUÁT VỀ ĐIỀU HOÀ HOẠT ĐỘNG GEN I- KHÁI QUÁT VỀ ĐIỀU HOÀ HOẠT ĐỘNG GEN II-ĐIỀU HOÀ HOẠT ĐỘNG Ở SINH VẬT NHÂN SƠ 1- Mô hình cấu trúc của Opêron Lac 2- Sự điều hoà hoạt động của Opêron Lac ... E.coli theo Jacôp và Cônô ở trạng thái ức chế và hoạt động ức chế và hoạt động 3- Điều hoà hoạt động gen ở SV nhân thực có 3- Điều hoà hoạt động gen ở SV nhân thực có những điểm gì khác với SV...
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TIET 3, BAI 3: ĐIỀU HÒA HOẠT ĐỘNG GEN

TIET 3, BAI 3: ĐIỀU HÒA HOẠT ĐỘNG GEN

... cần có sự điều hoà hoạt động gen. Hoạt động thầy Hoạt động trò Nội dung - Thế nào là điều hoà hoạt động gen? - Vì sao phải điều hòa hoạt động gen? - Để điều hoà hoạt động của gen, cơ thể sinh vật ... hoạt động sống của tế bào, cơ thể. - HS hoạt động cá nhân trả lời câu hỏi: nêu được 3 cấp độ điều hòa hoạt động gen. I. Khái quát về điều hoà hoạt động gen 1. Khái niệm : điều hoà hoạt động gen ... Tuần 2 Bài 3 Tiết: 03 Ngày soạn:16. 08.09 Ngày dạy: 17.08.09 I Mục tiêu bài học - Nêu được khái niệm và các cấp độ điều hoà hoạt động gen - Trình bày được cơ chế điều hoà hoạt động của các gen qua...
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Bài 3. Điều hòa hoạt động gen

Bài 3. Điều hòa hoạt động gen

... sự điều hòa. I. Khái quát về điều hòa hoạt động gen. Khái niệm: Điều hòa hoạt động gen chính là điều hòa lượng sản phẩm do gen tạo ra (ARN, protein…).  Điều hòa hoạt động gen là gì.  Điều hòa ... BÀI 3. ĐIỀU HÒA HOẠT ĐỘNG GEN  Kiểm tra bài cũ.  Tại sao phải có sự điều hòa hoạt động gen. Cơ thể có rất nhiều gen, các gen không hoạt động đồng thời tất cả, ở mỗi ... năng). II. Điều hòa hoạt động của gen ở sinh vật nhân sơ. ADN mARN tự nhân đôi Phiên mã Protein Tính trạng Dịch mã Điều hòa phiên mã Điều hòa phiên mã Điều hòa dịch mã Điều hòa dịch mã Điều hòa sau...
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Tài liệu bai 3 dieu hoa hoat dong gen ppt

Tài liệu bai 3 dieu hoa hoat dong gen ppt

... h0" alt="" • Good luckĐIỀU HOÀ HOẠT ĐỘNG GEN Bài 3 I. Khái quát về điều ho hoạt động gen - Điều hoà hoạt động gen: Điều hoà lợng sản phẩm do gen tạo ra, giúp tế bào điều chỉnh tổng hợp prôtêin ... điều hoạt động. B. Phần lớn các gen trong tế bào không hoạt động hoặc họat động rất yếu.C. Chỉ có một gen trong tế bào hoạt động. D. Tất cả các gen trong tế bào có lúc đồng hoạt động có khi ... trúc Opêron LacII. Điều ho hoạt động của gen ở sinh vật nhân sơ-Opêron: IU HO HOT NG GEN P R P 0 Z Y A Gen điều hoOpêron LacR P 0 Z Y A Gen điều hoOpêron Lac- Gen điều hoà R (không nằm...
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Bài 3 điều hòa hoạt động của gen

Bài 3 điều hòa hoạt động của gen

... Tiết:5 Bài 3: ĐIỀU HÒA HOẠT ĐỘNG CỦA GEN I. MỤC TIÊU: - HS trình bày được thế nào là điều hòa họat động của gen. - Mô tả, vẽ, trình bày được cơ chế điều hòa hoạt động của operon Lac ... quát về điều hòa hoạt động gen: Điếu hòa hoạt động của gen chính là điều hòa lượng sản phẩm của gen được tạo ra( chuỗi polipeptit và ARN) cho phù hợp với hoạt động sống của tế bào,với điều kiên ... tế bào có thể điều khiển cho gen hoạt động đúng vào thời điểm cần thiết? (đó là nhờ cơ chế điều hòa hoạt động của gen bài hôm nay chúng ta sẽ tìm hiểu) 3. Bài mới: Nội dung Hoạt động của GV...
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Bài 3. Điều hòa hoạt động của gen

Bài 3. Điều hòa hoạt động của gen

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  • 31
  • 626
  • 1
Bài 3: Điều hòa hoạt động của gen

Bài 3: Điều hòa hoạt động của gen

... hoạt động tổng hợp prôtêin vào lúc thích hơp - Điều hòa hoạt động gen: Điều hòa phiên mã, điều hòa dịch mã, sau dịch mã. SV nhân sơ, điều hòa chủ yếu là phiên mã. II. ĐIỀU HÒA HOẠT ĐỘNG CỦA GEN ... là điều hoà lượng sản phẩm - Điều hoà hoạt động gen điều hoà lượng sản phẩm của gen. của gen. - Vd: người có khoảng 25000 gen, chỉ có 1 số gen hoạt đông, phần lớn gen ở trạng thái không hoạt ... nhóm gen cấu trúc (Z, Y, A). D. gen điều hòa (R), vùng vận hành, nhóm gen cấu trúc (Z, Y, A). Câu 2. Trong cơ chế điều hòa hoạt động gen ở SV nhân sơ, gen điều hòa R có vai trò A. mang thông...
  • 18
  • 660
  • 2
Gián án bài 3: dièu hòa hoạt động của gen

Gián án bài 3: dièu hòa hoạt động của gen

... sự điều hòa. I. Khái quát về điều hòa hoạt động gen. Khái niệm: Điều hòa hoạt động gen chính là điều hòa lượng sản phẩm do gen tạo ra (ARN, protein…). Điều hòa hoạt động gen là gì. Điều ... BÀI 3. ĐIỀU HÒA HOẠT ĐỘNG GEN  Kiểm tra bài cũ. Tại sao phải có sự điều hòa hoạt động gen. Cơ thể có rất nhiều gen, các gen không hoạt động đồng thời tất cả, ở mỗi ... năng).II. Điều hòa hoạt động của gen ở sinh vật nhân sơ.ADNmARNtựnhânđôiPhiên mãProteinTính trạngDịch mã Điều hòa phiên mã Điều hòa phiên mã Điều hòa dịch mã Điều hòa dịch mã Điều hòa...
  • 4
  • 489
  • 1
bải : điều hòa hoạt động gen

bải : điều hòa hoạt động gen

... quát về điều hoà hoạt động I- Khái quát về điều hoà hoạt động gen : gen :  Điều hoà hoạt động gen chính là điều hoà lượng Điều hoà hoạt động gen chính là điều hoà lượng sản phẩm của gen tạo ... I- KHÁI QUÁT VỀ ĐIỀU HOÀ HOẠT ĐỘNG GEN I- KHÁI QUÁT VỀ ĐIỀU HOÀ HOẠT ĐỘNG GEN II-ĐIỀU HOÀ HOẠT ĐỘNG Ở SINH VẬT NHÂN SƠ 1- Mô hình cấu trúc của Opêron Lac 2- Sự điều hoà hoạt động của Opêron Lac ... E.coli theo Jacôp và Cônô ở trạng thái ức chế và hoạt động ức chế và hoạt động 3- Điều hoà hoạt động gen ở SV nhân thực có 3- Điều hoà hoạt động gen ở SV nhân thực có những điểm gì khác với SV...
  • 11
  • 775
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