#Question id: 10924
#Unit 6. System Physiology – Plant
Due to damage exudation of sap from cut petioles or stems takes place they can be collected. However, quantities of collected sap are small, and the method is technically difficult. A preferable approach for collecting exuded sap is to use an
#Question id: 7242
#Unit 5. Developmental Biology
The
cells of posterior marginal zone act as
the equivalent of the amphibian Nieuwkoop center because:
A.
once the PMZ has formed, it controls the other regions of the margin.
B.
Cells of PMZ initiate other regions of the margin from forming their own
primitive streaks.
C.
the entire marginal zone produces Wnt8c (capable of inducing the accumulation
of -catenin) and secrete Vg1, a member of the TGF-family.
D.
The PMZ cells secretes nodal protein and Nodal activity is needed to initiate
the primitive streak.
E.
When placed in the anterior region of the marginal zone, a graft of PMZ tissue
(posterior to and including Koller’s sickle) is able to induce wnt signaling.
Which of the following option is correct?
#Question id: 12862
#General Aptitude
#Question id: 3764
#Unit 3. Fundamental Processes
What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?
#Question id: 31286
#Unit 5. Developmental Biology