TLS Online TPP Program

#Question id: 7206


Which of the following statements explains the dominant mutation of Pmar1 results in a vegetalized embryo is due to:

#Unit 5. Developmental Biology
  1. HesC is activated; Mesodermal specification is induced by delta protein.
  2. HesC transcription is repressed which further leads to activation of skeletogenic genes in all cells.
  3. High concentration of Beta-catenin in the micromeres.
  4. Otx and maternal beta-catenin activated Pmar1.
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TLS Online TPP Program

#Question id: 22957

#Unit 5. Developmental Biology

floral organ development is controlled by overlapping expressions of A class , B class and C class genes in different whorls. In an Arabidopsis mutant, the floral whorls had following pattern:
Sepal àSepal àcarpel àcarpel 
Mutation in which one of the following class of gene causes above pattern.  

TLS Online TPP Program

#Question id: 2980

#Unit 2. Cellular Organization

Following statements are regarding to the protein phosphatase Cdc14 function in budding yeast.

A. In budding yeast, the protein phosphatase Cdc14 throws the switch between two mutually antagonistic states during anaphase.

B. Cdc14 is kept inactive during most of the cell cycle, but is activated during anaphase by a GTPase signaling pathway known as the mitotic exit network.

C. Mitotic exit network is unresponsive to spindle position and becomes active in anaphase.

D. Cdc14 phosphatase activated by the activation of protein kinase cascade.

E. Cdc14 dephosphorylates APC/CCdh1 and Sic1 to promote mitotic cyclin degradation

and mitotic CDK inactivation, respectively. This process leads to exit from mitosis.

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 28796

#Unit 2. Cellular Organization

Formin family members have two adjacent domains such as;
I- FH1
II- FH2
a) form a nucleate filament assembly
b) rich in proline
c) form a dimer
d) landing site for profilin–ATP–G-actin
e) assembly of unbranched filaments

Match the correct statements with given formin family domain;

TLS Online TPP Program

#Question id: 5124

#Unit 5. Developmental Biology

Following statements are being made regarding conditional specification –

A. The process by which cells achieve their respective fates by interacting with other cells.

B. the cell “knows” very early what it is to become without interacting with other cells.

C. The critical factors that control cell fate are present and differentially segregated in the cytoplasm of these cells.

D. a cell becomes is specified by the array of interactions it has with its neighbors, which may include cell-to-cell contacts (juxtacrine factors), secreted signals (paracrine factors).

Which of the above statements are correct?

TLS Online TPP Program

#Question id: 118

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following best describes the cholesterol molecule?