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		<h1>Virut</h1>
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			<li>Thứ bảy - 12/12/2020 09:36</li>
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			Câu 1: Tên virut gây bệnh cúm A như H1N1, H3N2, H5N1 có ý nghĩa như thế nào?
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			<span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><span style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">- Tên của các virut cúm A như H1N1, </span></span></span><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">H3N2, H5N1 bao hàm ý nghĩa đặc thù cấu trúc kháng nguyên vỏ ngoài của virut. </span></span></span></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">- Chữ H (chất ngưng kết hồng cầu), chữ N ( enzim tan nhầy) là ký hiệu của 2 kháng nguyên gây nhiễm trên vỏ của hạt virut cúm A giúp virút gắn vào thành tế bào rồi sau đó đột nhập vào tế bào .</span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">- Chữ số 1,2,3,5 là chỉ số thứ tự của kháng nguyên H và N đã biến đổi. </span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><u><span lang="FR" style="font-size:14.0pt"><span style="line-height:150%">Câu 2</span></span></u></b></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="FR" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">a.</span></span></span></b><span lang="FR" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black"> Nêu các đặc trưng cơ bản của virut? </span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="FR" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">b.</span></span></span></b><span lang="FR" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black"> Chứng minh rằng virut nằm giữa ranh giới cơ thể sống và vật không sống</span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">ĐA: Đặc trưng cơ bản của virut là: </span></span></span></b></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">- </span></span></span></b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">Chưa có cấu tạo tế bào</span></span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">- </span></span></span></b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">Kích thước vô cùng nhỏ bé, cấu tạo gồm 2 thành phần chính là vỏ prôtêin và lõi axit nuclêic ( là ADN hoặc ARN)</span></span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">- Sống kí sinh nội bào bắt buộc<b> </b>trong tế bào vật chủ.</span></span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">&nbsp;b. Chứng minh:</span></span></span></b></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">- </span></span></span></b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">Khi trong tế bào vật chủ nó có biểu hiện những dấu hiệu đặc trưng cơ bản của sự sống </span></span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="tab-stops:0cm"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">( trao đổi chất và năng lượng, sinh sản...).</span></span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">- Chưa có cấu tạo tế bào (cấu tạo đơn giản gồm 2 thành phần là: prôtêin và axit nuclêic), khi tồn tại bên ngoài tế bào vật chủ thì không các dấu hiệu đặc trưng của sự sống.</span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">Cấu 3: </span></span></span></b>&nbsp;<span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">&nbsp;Cấu tạo và hoạt động sống của virut có những đặc điểm nào khác so với các nhóm sinh vật khác? </span></span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%"><span style="color:black">Câu 4: Hình thái của virut (sgk)</span></span></span></b></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%">Câu 5: Khái niệm virut độc, virut ôn hòa, chu trình tiềm tan</span></span></span></span></span><br  />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="DE" style="font-size:14.0pt"><span style="line-height:150%">Câu 6: Trình bày chu trình nhân lên của của phagơ (phag T<sub>2</sub> trong tế bào vật chủ)</span></span></span></span></span><br  />
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