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

What is hemorrhage, What is Hemorrhage Mild to moderate capillary ooze...

What is Hemorrhage Mild to moderate capillary ooze can readily be controlled by pressure packing. A more severe venous or, in rarer instances, an arterial bleed may require cl

Define foam spray drying method, Define Foam Spray Drying Method? This...

Define Foam Spray Drying Method? This is an extension of spray drying and involves the use of gases dissolved under pressure prior to spraying. The main advantage is that the

Effects of long term malnutrition, Effects of long term malnutrition ...

Effects of long term malnutrition The effects of long term malnutrition are more severe in children. Children do not have sufficient amounts of carbohydrates and fats in

Explain about left cerebral hemisphere, How is it structurally explained th...

How is it structurally explained that the motor activity of the left side of the body is controlled by the right cerebral hemisphere and the motor activity of the right side of the

Difference between smooth and rough endoplasmic reticulum, What is the diff...

What is the difference among smooth and rough endoplasmic reticulum?       Ans) The endoplasmic reticulum is a fine membranous structure contiguous to the nuclear membrane and p

Limerick, how do we write a limerick spell?

how do we write a limerick spell?

Explain the life history of lycophytes, Explain the Life History of Lycophy...

Explain the Life History of Lycophytes? Lycophytes have two separate and distinct generations in their life history that alternate with each other. The gametophyte stage is tin

Recycling of plasma membrane components, Recycling of Plasma Membrane Compo...

Recycling of Plasma Membrane Components During exocytosis secretory vesicles fuse with plasma membrane, adding to the membrane surface area. Yet, the surface area of plasma me

EMBRYOLOGY.., WHAT IS RECAPITULATION THEORY OF EMBRYOLOGY?AND WHAT IS EMBRY...

WHAT IS RECAPITULATION THEORY OF EMBRYOLOGY?AND WHAT IS EMBRYOLOGY

Family is the basic unit of society - child care, Family  is the Basic Uni...

Family  is the Basic Unit of Society   Each child within a family needs love and security to develop feelings of  trust and self esteem. Each child is a unique individual who h

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