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TLS Online TPP Program

#Question id: 28236

 One of the mechanism of stem cell regulation is Extracellular mechanisms which involve physical as well as chemical regulation. which of the following prediction is incorrect about the Physical mechanisms ?

#Unit 5. Developmental Biology
  1. differences in cell-to-cell and cell-to-matrix adhesions can alter the mechanical forces that influence stem cell behavior
  2. it including the progenitor differentiation through signalling mechanism such as juxtacrine mechanism
  3. it including Structural & adhesion factors within the extracellular matrix that support the cellular architecture of the niche
  4. the cell density within the niche can also involve to altering the mechanical forces that influence stem cell behavior
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TLS Online TPP Program

#Question id: 31235

#Unit 2. Cellular Organization

Most of the cohesins along the chromosome arms are removed from chromosomes during prophase, mediated by phosphorylation of cohesins by:
TLS Online TPP Program

#Question id: 2580

#Unit 2. Cellular Organization

Following statements are regarding to mechanism of kinesin-1 movement.

A. Initially leading head tightly bound to the microtubule and not bound by any nucleotide, while the trailing head is weakly bound to the microtubule and has ADP bound.

B. Binding of ATP induces a conformational change causing the linker to swing forward and dock into the head. This motion swings the former trailing head to become the leading head.

C. Binding of ATP induces a conformational change causing the linker to swing forward and dock into the head. This motion swings the former leading head to become the trailing head.

D. When leading head releases ADP and coordinately the trailing head hydrolyzes ATP to ADP + Pi. Pi is released and the linker becomes undocked.

E. When trailing head releases ADP and coordinately the leading head hydrolyzes ATP to ADP + Pi. Pi is released and the linker becomes undocked.

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 28677

#Unit 2. Cellular Organization

Which of the following phase of cell cycle, when the lamins are disappear?
TLS Online TPP Program

#Question id: 22011

#Unit 1. Molecules and their Interaction Relevant to Biology

If the value of intercept on x axis in Lineweaver-Burk equation is -2 then the value of Km will be
TLS Online TPP Program

#Question id: 4538

#Unit 3. Fundamental Processes

We first consider a generic case. Gene A is controlled by four signals (1, 2, 3, and 4), each working through a separate activator (activators 1, 2, 3, and 4). Gene B is controlled by three signals (3, 5, and 6), working through activators 3, 5, and 6. It shows-