A vector contains the nitR gene under the control of the nitA promoter in a separate operon, the expression of vector is used, upon the addition of the inducer. The inducer–NitR protein complex activates the transcription of both the target gene(s) and nitR and increased level of NitR results in a very high level of production of the target protein(s). Which type of inducer using by nitR?

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#Question id: 13154

#Unit 2. Cellular Organization

In starving cells, however, such degradation would deplete essential enzymes and regulatory proteins. Lysosomes therefore also have a selective pathway, which is activated only after a prolonged fast, that imports and degrades cytosolic proteins containing the pentapeptide  , the sequence is

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#Question id: 23437

#General Aptitude

Veena who is the sister-in-law of Ashok, is the daughter-in-law of Kalyani. Dheeraj is the father of Sudeep who is the only brother of Ashok. How Kalyani is related to Ashok?

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#Question id: 20274

#Unit 7. System Physiology – Animal

ADH has two actions, one on the kidney and the other on vascular smooth muscle, these actions are mediated by different receptors, different intracellular mechanisms, and different secondary messengers.

a. The major action of ADH is to increase the water permeability of principal cells in the late distal tubule and collecting duct.

b. The receptor for ADH on the principal cells is a V2 receptor, which is coupled to adenylyl cyclase via a Gs protein. 

c. The second messenger is cAMP, via phosphorylation steps, directs the insertion of water channels, aquaporin 2 (AQP2), in luminal membranes.

d. The receptor for ADH on the principal cells is a V1 receptor, which is coupled to phospholipase C via Gq protein.

Which one of the following combination of above statements is correct?

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#Question id: 12571

#Unit 10. Ecological Principles

Although extinction is a natural process, current extinctions are of concern to environmentalists because

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#Question id: 5445

#Unit 8. Inheritance Biology

A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 90 inches in height. What is percent of F2 progeny that is resemble with either 120 cm or 60 cm height?