#Question id: 15854
#Unit 5. Developmental Biology
#Question id: 19355
#Unit 12. Applied Biology
#Question id: 7295
#Unit 5. Developmental Biology
If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering? (SS)
#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: 5310
#Unit 11. Evolution and Behavior
Current analysis indicates that less than 2% of the human genome codes for proteins. Based on the systems approach employed by the ENCODE project, what percentage of the genome is estimated to be transcribed at some point in at least one cell type?