The crystal structural  of a peptide has an ordered structural repeat of amino acids with a distance of ~ 6.5 A between the alternate Ca atoms. Which one of the following pair of dihedral angles accurately represents the peptide structural ?

TLS Online TPP Program

#Question id: 1922

#Unit 4. Cell Communication and Cell Signaling

A B-cell lymphoma will express a unique tumor antigen called:

TLS Online TPP Program

#Question id: 21019

#Unit 12. Applied Biology

During anaerobic fermentation the pure lactic acid production is favoured by___

TLS Online TPP Program

#Question id: 14740

#Unit 4. Cell Communication and Cell Signaling

Rod cells sense light with the aid of a light-sensitive GPCR known as rhodopsin; choose incorrect statements

a. Rhodopsin consists of the protein opsin, which has the usual seven–transmembrane segment GPCR structure, covalently linked to a light-absorbing pigment called retinal. 

b. Rhodopsin, found only in rod cells, is localized to the thousand or so flattened membrane disks that make up the inner segment of each of these rod-shaped cells.

c. A human rod cell contains about 4 × 10⁷ molecules of rhodopsin. 

d. The heterotrimeric G protein coupled to rhodopsin, called transducin (Gt), contains a Gα unit referred to as Gαt; like rhodopsin, Gαt is found only in rod cells.

TLS Online TPP Program

#Question id: 11261

#Unit 10. Ecological Principles

Which of the following kinds of social interactions cannot be favoured by natural selection under any circumstance?

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#Question id: 7565

#General Aptitude

A Train T1 starts from Ahmedabad to Mumbai at 7 am and reaches at 12 noon. A second train T2 starts at 7 am from Mumbai reaches Ahmedabad at 1 pm. When did the two train cross each other ?