#Question id: 1250
#Unit 4. Cell Communication and Cell Signaling
Few mutants (column A) and their results (column B) are listed in the table given below:
|
Column A |
Column B |
|
A. Gain-of-function of Ski |
I. Inhibits the ability of activated type I TGF-β receptors (RI) to phosphorylate R-Smad proteins |
|
B. Loss-of-function of RII receptor |
II. Transcription activation induced by TGF-β and mediated by Smad complexes is shut down |
|
C. Gain-of-function of smad-7 |
|
|
D. Loss-of-function of R-smad |
Match the correct mutation with the observe result?
#Question id: 837
#Unit 1. Molecules and their Interaction Relevant to Biology
Increasing order of free energy in unfolded to folded conformation of the proteins, the correct order is,
#Question id: 5674
#Unit 5. Developmental Biology
Following statements are regarding to the mechanism of migration of pollen tube.
A. The embryo sac is the product of three mitotic divisions of the diploid megaspore; it comprises seven cells and eight haploid nuclei.
B. The two polar nuclei in the central cell will fuse with the second sperm nucleus and produce the endosperm that will nourish the egg. The other six cells, including the egg, contain one haploid nucleus each.
C. After compatible pollen germinates, the pollen tube grows toward the micropyle.
D. The three cells from the pollen are connected to one another at the tip of the tube, and waves of sodium ions play a key role in the growth of the tube.
Which of the following combinations are correct?
#Question id: 3782
#Unit 3. Fundamental Processes
In his work with pneumonia-causing bacteria and mice, Griffith found that
#Question id: 19529
#Unit 12. Applied Biology