#Question id: 721
#Unit 1. Molecules and their Interaction Relevant to Biology
Addition of urea leads to a two-state transition between α-helix and random coil conformation. It has been observed that [θ]222 of the polypeptide is -11000 deg cm2 dmol-1 in the presence of 6M urea. Initially it was observed that tile values of mean residue ellipticity at 220 nm ([θ]220) are -36000, and +4000 deg cm2 dmol-1 for α-helix, and random coil conformations of this polypeptide. The percentage of the polypeptide in α-helix conformation is:
#Question id: 1730
#Unit 4. Cell Communication and Cell Signaling
What is the T-cell ligand binding B7 on a professional antigen-presenting cell?
#Question id: 1073
#Unit 4. Cell Communication and Cell Signaling
Prions
#Question id: 28426
#Unit 5. Developmental Biology
A sheet of cells that grows anteriorly from Koller’s sickle combines with the primary hypoblast to form the complete hypoblast layer is termed as___
#Question id: 28434
#Unit 5. Developmental Biology
Primitive Streak is homologous to_____