#Question id: 29433
#Unit 6. System Physiology – Plant
#Question id: 6963
#Unit 5. Developmental Biology
During early sea urchin development, which embryonic cells have similar organizer activity to that of amphibian Spemann organizer?
#Question id: 7290
#Unit 5. Developmental Biology
Following figure regarding to regulatory network in the Arabidopsis shoot meristem stem-cell niche.
A. The transcription factor WUS is synthesized in the cell A and moves via plasmodesmata into cell B, where one of its functions is to induce expression of the CLV3.
B. The transcription factor CLV3 is synthesized in the cell A and moves via plasmodesmata into cell B, where one of its functions is to induce expression of the WUS.
C. Secreted CLV3 protein from cell B binds to the receptor protein kinase on the surface of cell A; there, it activates a signal that represses WUS transcription.
D. Secreted WUS protein from cell B binds to the receptor protein kinase on the surface of cell A; there, it activates a signal that represses CLV3 transcription.
Which of the following combination is correct?
#Question id: 23564
#Unit 8. Inheritance Biology
Match the following
|
Column I |
Column II |
|
A) G-bands |
i) viewing
the chromosomes under ultraviolet light results from differences in the relative amounts of
cytosine–guanine (C–G) and adenine–thymine base pairs |
|
B) R-bands |
ii) which are
regions of DNA occupied by centromeric heterochromatin |
|
C) Q-bands |
iii) staining
the telomere DNA specifically |
|
D) C-bands |
iv) distinguish
areas of DNA that are rich in adenine–thymine (A–T) base pairs |
|
E) T-bands |
v) reverting
the dark bands by using saltingout method |
#Question id: 654
#Unit 1. Molecules and their Interaction Relevant to Biology
Which pair represents different conformations?