operon

[dat_student]

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is operon a binding site for
A) regulator
B) repressor
C) inducer

 

[Richnator]

is operon a binding site for
A) regulator
B) repressor
C) inducer

B, repressor.

 

[dat_student]

B, repressor.

wrong according to my source

 

[Richnator]

wrong according to my source

hmm, the source is wrong because I am usually correct 😀

 

[dat_student]

I'm going with A - regulator

since an operon is a binding site for an enzyme regulator usually, that can repressed or induced

no/yes?

yes

 

[Richnator]

I'm going with A - regulator

since an operon is a binding site for an enzyme regulator usually, that can repressed or induced

no/yes?

Wouldn't the inducer bind to the repressor, so the repressor can no longer bind to the operon.

 

[dat_student]

Wouldn't the inducer bind to the repressor, so the repressor can no longer bind to the operon.

I picked repressor but answer is regulator

 

[Divineimpetus]

I might be wrong, but i think the inducer is what causes the enzyme to let the operon go intro transcription (lac operon). The repressor causes the enzyme to to bind to the operon and not allow it to transcribe (trp operon)

lac operon
enzyme sticks to the operon until an inducer causes a conformational change that allows for transcription

trp operon
enzyme is not stuck to the operon until a repressor comes and causes a conformational changed that makes the enzyme stick to the operon.

yes/no? it is kind of confusing... i still don't fully get it.. might want to look it up

 

[dat_student]

I might be wrong, but i think the inducer is what causes the enzyme to let the operon go intro transcription (lac operon). The repressor causes the enzyme to to bind to the operon and not allow it to transcribe (trp operon)

lac operon
enzyme sticks to the operon until an inducer causes a conformational change that allows for transcription

trp operon
enzyme is not stuck to the operon until a repressor comes and causes a conformational changed that makes the enzyme stick to the operon.

yes/no? it is kind of confusing... i still don't fully get it.. might want to look it up

regulator is the one that confuses me, why a regulator? where does a regulator come into play?!

 

[Divineimpetus]

Because you need to regulate what the operon might transcribe.

 

[Richnator]

regulator is the one that confuses me, why a regulator? where does a regulator come into play?!

Ok, I read that part of kaplan again. So, I think the author of the problem made a mistake. The regulator gene codes for the repressor molecule. The repressor is the actual molecule that binds to the operon. The inducer binds to the repressor's binding site, so it can no longer bind to the operon in the the case of an inducible system. So, yes. The repressor binds to the operon. The regulator is only a gene, not the molecule.

 

[Future DDS]

hmm, it's only been 6 weeks since I took my DAT.. and I totally don't remember this stuff! 😱
i think Im having too much summer fun 😀 ..

 

[Divineimpetus]

Hahahah, that was rude

Although, I'll be saying the same thing to my predental buddies back at school once I'm done

hmm, it's only been 6 weeks since I took my DAT.. and I totally don't remember this stuff! 😱
i think Im having too much summer fun 😀 ..

 

[pudge123]

is operon a binding site for
A) regulator
B) repressor
C) inducer

Schaums says that a repressor is a type of a regulator. But the repressor is actually at the site. Maybe im reading wrong and should work at McDonalds.

Ya, so i agree with richinator.

 

[miravyn]

Do you mean operator instead of operon. Operon is a generic term describing a group of genes regulated by similar regulatory factors (sorry bad definition).

 

[Richnator]

Do you mean operator instead of operon. Operon is a generic term describing a group of genes regulated by similar regulatory factors (sorry bad definition).

Yah, operator gene.

 

[dat_student]

Do you mean operator instead of operon. Operon is a generic term describing a group of genes regulated by similar regulatory factors (sorry bad definition).

yes, I meant operator