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In repressible operon system, co-repres...

In repressible operon system, co-repressor molecule is

A

Lactose

B

Tryptophan

C

Galactoside

D

Glucose

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The correct Answer is:
B
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In trp operon, the corepressor is

Lac operon is

Repressible enzymes is

An operon consists of

Repressor of lac-operon

Repressible operon system is usually found in (i)____ pathways. The pathway's end product serves as a (ii) ______ to activate the repressor, turn off enzyme synthesis and prevent overproduction of the end product of the pathway. Genes for this operon are usually switched (iii)_____ and the repressor is synthesised in an (iv)_____ .

Study the figure given below and answer the questions . How does the repressor molecule get inactivated? When does the transcription of lac mRNA stop? Name the enzyme transcribed by the gene 'z'.

Study the figure given below and answer the questions: (i) How does the repressor molecule get inactivated? (ii) When does the transcription of lac mRNA stop? (iii) Name the enzyme transcribed by the gene Z'.

Inducer of Lac operon is

The lac operon consists of

AAKASH INSTITUTE ENGLISH-MOLECULAR BASIS OF INHERITANCE -EXERCISE
  1. Some genes are constantly expressed in the bacterial cells. These gene...

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  2. How many structural genes are present is lac-operon of E.coli?

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  3. In Iac-operon, beta -galactosidase enzyme is made by

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  4. Inducer molecule in lac-operon of E coli is chemically

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  5. Tryptophan operon is (a) Catabolic system (b) Repressible system (...

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  6. Choose the correct option w.r.t the chemical natural of apo-repr...

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  7. Gene battery model was proposed by

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  8. An insect leg may change into antenna due to mutation in

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  9. In repressible operon system, co-repressor molecule is

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  10. Select incorrectly matched pair

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  11. During DNA fingerpriting, separation of DNA fragmemts is done by

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  12. Sequencing the whole set of genome that contained all the coding and n...

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  13. The last step of DNA fingerprinting is (a) Blotting (b) Autoradi...

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  14. DNA fingerprinting can be used (a) To solve cases of disputed paterni...

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  15. Human genome is said to have approximately (a) 3 xx 10 ^(9) bp (b) 3...

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  16. How many total number of genes are found in human genome ?

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  17. % of the genome codes for protein in human beings.

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  18. In humans, the largest gene is present on

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  19. TDF gene is the smallest gene in humans with

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  20. SNPs stand for

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