Q. Which of the following is incorrect about the inactive state of the Ras protein?

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Q. The regulatory proteins bind to the enzymes with covalent linkages.

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Q. The activity of which of the following proteins is not regulated by covalent modifications?

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Q. Protein kinases transfer phosphate groups to the side chains of which of the following?

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Q. Like kinases all phosphatases are also species specific in nature.

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Q. Which of the following is false about amino acid modification and activity?

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Q. The cAMP-dependent protein kinase has how many subunits?

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Q. In case of transcription which is the rate limiting step?

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Q. The site where repressor binds the DNA is the ______________

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Q. Recruitment of RNA polymerase to the promoter is a ___________

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Q. The proteins of which of the following genes are regularly needed for cellular activity?

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Q. Which of the following are the products of the constitutive gene?

i. Involved in the synthesis of structural elements of the cell
ii. Involved in catabolic pathway
iii. Involved in anabolic pathway
iv. Synthesized continuously

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Q. Which of the following is not an example of allosteric regulation?

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Q. Operons are ___________

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Q. Which of the following are correct according to operons?

i) Consists of multiple genes organized between a promoter and a terminator
ii) Member genes regulate with coordination
iii) Usually controlled by autogenous transcription
iv) Contains genes for stress tolerance exclusively

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Q. Choose the correct pair among the following.

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Q. Which of the following is not present in the β-galactosidase structural gene and thus is not transcribed by the same promoter?

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Q. Glucose, as the carbon source, is the first choice by bacteria even if other sugars are available. The mechanism behind this selectivity is ___________

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Q. The lac operon is regulated by cAMP by ___________

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Q. Tryptophan operon in E. coli is a repressible operon.

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