
Câu hỏi về Operon Lac
Authored by Phi Bằng
Biology
University
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47 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Operon Lac được tìm thấy điển hình ở sinh vật nào?
Vi khuẩn E. coli
Nấm men
Thực vật bậc cao
Động vật có vú
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chức năng chính của operon Lac là:
Tổng hợp tryptophan
Phân giải lactose
Phân giải glucose
Vận chuyển amino acid
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gen lacZ mã hóa cho enzyme:
β-galactosidase
Permease
Transacetylase
RNA polymerase
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gen lacY mã hóa cho protein:
β-galactosidase
Permease (vận chuyển lactose)
Transacetylase
Repressor
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gen lacA mã hóa cho enzyme:
Transacetylase
β-galactosidase
Permease
DNA polymerase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gen điều hòa lacI có vai trò gì?
Mã hóa repressor, ức chế phiên mã
Mã hóa β-galactosidase
Mã hóa CAP protein
Mã hóa RNA polymerase
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong điều kiện không có lactose, trạng thái của lac operon là:
Bị ức chế, không phiên mã
Phiên mã mạnh
Luôn bật
Phiên mã một phần
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