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Translation And Regulation Of Gene Expression Free Doubts and Solutions

CBSE - XII Science - Biology - Molecular Basis of Inheritance

State the functions of ribozyme and release factor in protein synthesis respectively.

Asked by pksunilnair 24th March 2018, 4:53 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

the follwing is a line in NCERT:
 
A very low level of lactose of expression of lac operon has to be present in the cell all the time, otherwise lactose cannot enter into cell.
 
what is the reason for this? why lactose will not be able to enter the cell if present in more conentration?

Asked by devanshmalhotra2609 5th February 2016, 6:54 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Difference b/w Repetitive DNA and Satellite DNA?

Asked by Smita 4th October 2015, 9:49 AM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

 
z genes codes for b galactosidase or permease ?

Asked by sweety 21st August 2015, 8:41 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Differentiate between induction and repression. 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

What is operon? Name the three types of genes which make up an operon.

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

A low level of expression of lac operon occurs all the time. Can you explain the logic behind this phenomenon? 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

In the medium where E. coli was growing, lactose was added, which induced the lac operon. But why does the lac operon shut down after some time on addition of lactose in the medium?

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Mention the two steps in activation of amino acid translation.  

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

  What is promoter gene? 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

How is peptide bond formed? 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Who proposed the operon model? 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Give the site of protein synthesis. 

Asked by Topperlearning User 16th June 2014, 5:16 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

List two essential roles for ribosome during translation.

Asked by Topperlearning User 16th June 2014, 5:16 PM
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