#Question id: 19226
#Unit 12. Applied Biology
#Question id: 1711
#Unit 4. Cell Communication and Cell Signaling
On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?
#Question id: 1392
#Unit 4. Cell Communication and Cell Signaling
In the nematode C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?
#Question id: 2394
#Unit 2. Cellular Organization
Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the bound cyanide is likely to be localized within the ________.
#Question id: 725
#Unit 1. Molecules and their Interaction Relevant to Biology
At 25°C values of [θ]222, the mean residue ellipticity at 222 nm, are - 33,000 and -3,000 deg cm2 dmol-1 for a polypeptide existing in α- helical (α) and β-structure (β), respectively. If this polypeptide undergoes a two-state heat-induced α-β transition, and a value of [θ]222 = -15,000 deg cm2 dmol-1 is observed at 60°C, then this observation leads to the conclusion that the α helix conversion to β- structure is: