Positive and negative regulation, Biology

Assignment Help:

The lac operon is an brilliant example of negative control or negative regulation of gene expression in which they bound repressor stops transcription of the structural genes. The Positive control or positive regulation of gene expression is when the regulatory protein binds to enhances and DNA the rate of transcription.  In that case the regulatory protein is called as an activator.  The CAP or CRP included in regulating the lac operon is a good instance of an activator. Thus the lac operon is subject to both positive and negative control.

 

 


Related Discussions:- Positive and negative regulation

Explain starch, Starch It is a plant polysaccharide synthesized by  the...

Starch It is a plant polysaccharide synthesized by  the plant by photosynthesis and stored mainly  in  grains,  legumes,  roots  and  tubers.  Its molecular formula is (C 6 H 1

Explain fish actomyosin, Fish actomyosin Fish actomyosin has been found...

Fish actomyosin Fish actomyosin has been found to be quite labile and easily changed during processing and storage. During frozen storage, the actomyosin becomes progressively

Explain the dark adaptation of vitamin a, Explain the Dark Adaptation of Vi...

Explain the Dark Adaptation of Vitamin A? In the early stages of VAD, the individual cannot see objects in dim light. This' phenomenon is used as a criterion for assessment in

Objection, i have question that all scientist agree that the basic unit off...

i have question that all scientist agree that the basic unit off life is a cell and scientist said this to be a cell theory... and they also said that if a theory survive continuou

Making individual rock collections, Making individual rock collections ...

Making individual rock collections Peoples should be encouraged to make their own collection of rocks. Small pasteboard or cigar boxes will serve to be the collections. The spe

Historical example for scaling from individual to ecosystems, Define Histor...

Define Historical example for scaling from individual to ecosystems? Biological oceanographers have long utilized physiologically based models like the Droop model, which reduc

Explain procedure for checking the presence of rhodamine b, Explain Procedu...

Explain Procedure for Checking the Presence of Rhodamine B? Conduct the experiment following the procedure given herewith: 1. Pour liquid paraffin or mineral oil in a Petri

Nervous system, a) Produce annotated diagrams that illustrate how nerve imp...

a) Produce annotated diagrams that illustrate how nerve impulses travel i) along a neurone ii) across a synapse.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd