The stages in the formation of the symbiotic relationship between the nitrogen-fixing bacteria and their host, Arrange the given statements of symbiotic association in a stepwise manner;

 a) Migration of the bacteria toward the roots of the host plant by a chemotactic response mediated by chemical attractants

b) NodD with the flavonoids bind with the Promoter region of  highly conserved the nod box

c) These attractants activate the rhizobial NodD protein,

d) The chemical attractants especially (iso)flavonoids and betaines, secreted by the roots

e) Binding of the activated NodD to the nod box induces transcription of the other nod genes

 Which of the following from the above statements are correct arrangement of symbiosis?

#Question id: 861

#Unit 1. Molecules and their Interaction Relevant to Biology

Alexander Varshavsky discovered, the half-lives of many cytoplasmic proteins vary with the identities of their N-terminal residues via the so-called N-end rule:-

#Question id: 860

#Unit 1. Molecules and their Interaction Relevant to Biology

Select true ‘T’ AND false ‘F’ about ubiquitinylation

I. These ubiquitin-like modifiers control processes as diverse as nuclear import,

II. Regulated by the ubiquitin-like modifier Sumo, and autophagy,

III. Regulated by the ubiquitin-like modifier Atg8.

IV. For a protein to be efficiently degraded, it must be linked to a chain of at least four tandemly linked ubiquitin molecules in which Lys 34 of each ubiquitin forms an isopeptide bond with the C-terminal carboxyl group of the following ubiquitin.

#Question id: 654

#Unit 1. Molecules and their Interaction Relevant to Biology

Which pair represents different conformations?

#Question id: 655

#Unit 1. Molecules and their Interaction Relevant to Biology

A change from one conformation of a molecule to another involves ________.

#Question id: 656

#Unit 1. Molecules and their Interaction Relevant to Biology

The ________ is the single shape a protein adopts under physiological conditions.

#Question id: 657

#Unit 1. Molecules and their Interaction Relevant to Biology

Structural proteins that typically assemble into large cables or threads to provide mechanical support to cells or organisms are classified as ________ proteins.