#Question id: 18004
#Unit 9. Diversity of Life Forms
#Question id: 10464
#Unit 6. System Physiology – Plant
As with cryptochrome and phytochrome, the N-terminal photosensory region of the phototropins controls the activity of the C-terminal half of the protein, which contains a serine/threonine kinase domain. Following are some statements about photosensory region of the phototropins.
a) The activation of the C-terminal kinase domain then leads to receptor autophosphorylation on multiple serine residues that is required for all phototropin-mediated responses
b) In the dark, the N-terminal region, including the LOV domains, “cages” and inhibits the activity of the kinase domain
c) In the light, the N-terminal region, including the LOV domains, “cages” and inhibits the activity of the kinase domain
d) Absorption of blue photons by the LOV domains results in primary photochemical changes that lead to the uncaging of the kinase domain and its activation by the unfolding of the Jα-helix
Which one of the following combination of above statements is correct?
#Question id: 5461
#Unit 8. Inheritance Biology
When two or more nonallelic gene pairs affect the same character in the same way, it is called _______.
#Question id: 8701
#Unit 9. Diversity of Life Forms
The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter). The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.
Based on the tabular data, and assuming that time advances vertically, which phylogenetic tree is the most likely depiction of the evolutionary relationships among these five species?
#Question id: 27957
#Unit 1. Molecules and their Interaction Relevant to Biology
Bicarbonate + Pyruvate→ Oxaloacetate
a. This reaction catalyzed by pyruvate carboxylase
b. This reaction catalyzed by carbonic anhydrases
c. Uses biotin as cofactor of pyruvate carboxylase
d. Uses biotin as cofactor ofby carbonic anhydrases