The tac promoter includes the lac operator and is regulated by a repressor.

Which of the following statements is/are correct about the 5th Schedule of the Indian Constitution? 1. The Governors are bound to constitute a TAC (Tribe Advisory Council) in the 5th Schedule areas. 2. The TAC is an elected body. 3. The advice of TAC is binding in nature.

A

1 only

B

1 and 2 only

C

1 and 3 only

D

2 only

Consider the following statements and choose the correct answer:
1. The structural genes direct the synthesis of cellular proteins through messenger RNA (mRNA)
2. The promoter gene determines whether or not the structural genes are to be repressed by the repressor
3. The regulator gene directs the synthesis of a protein which may be an active repressor or an inactive repressor

A

1, 2 and 3 are true

B

Only 2 and 3 are true

C

Only 1 and 3 are true

D

Only 1 and 2 are true

The tac promoter is made by _____ region of trp promoter and _____ region of the lacUV5 promoter.

A

10, 35

B

35, 10

C

10, 10

D

35, 35

Lac repressor dissociates from its operator when the repressor binds to ____________

A

Heat shock module

B

Promoter

C

Inducer

D

Catabolite activator site

The lac operon is found only in prokaryotes and consists of structural genes and a promoter and operator. Which of the following statements explains why we study the lac operon?

A

It represents a principal means by which gene transcription can be regulated.

B

It explains how baby mammals utilize lactose from their mothers as they nurse.

C

It illustrates how RNA is processed after it is transcribed.

D

It illustrates possible control of the cell cycle and may lead to an understanding of cancer.

tac promoter is an example of which type of promoter?

A

hybrid promoter

B

fusion promoter

C

lacZ promoter

D

araBAD promoter

In a mero-diploid you have one I- and one I+ Repressor gene in the two lac operons. I+ is wild type while I- is a mutant which produces a repressor that doesn’t bind. What would be the functionality of the diploid?

A

Function normally

B

Will be non-functional

C

May or may not function

D

Will have impaired functioning

A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________

A

Dimer inactivated when bound to the inducer

B

Dimer activated on inducer binding

C

Tetramer inactivated on inducer binding

D

Tetramer activated on inducer binding

A and B jointly owe Rs. one lac to C. A alone pays the whole amount to C. B not knowing the fact of payment by A pays Rs. one lac over again to C. Is C bound to repay Rs. one lac to B.

A

No he is not bound to repay

B

No he is not as thee is neither express nor implied contract to repay

C

C may repay if he wants to

D

C is bound to repay

Lac, a scarlet resinous secretion of tiny insects referred to as lac insects, which produces a gum like secretion used in the production of various commodities such as gums, dyeing fabrics, bangle making, wood polishing etc. Which of the following state is the largest producer of LAC in India?

A

Jharkhand

B

Chhattisgarh

C

Madhya Pradesh

D

Gujarat

The tac promoter includes the lac operator and is regulated by a repressor.

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