TLS Online TPP Program

#Question id: 2789


All of the following can be found in chromatin except

#Unit 2. Cellular Organization
  1. DNA.

  2. histones.

  3. RNA.

  4. transcription factors.

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TLS Online TPP Program

#Question id: 7261

#Unit 5. Developmental Biology

The Turing model provides a framework for limb development. Following statements are regarding to this model:


A. In Turing’s model, morphogen A promotes the production of more morphogen A (autoactivation) as well as production of morphogen I. Morphogen I, however, inhibits the production of morphogen A (lateral inhibition).


B. In Turing’s model, morphogen A inhibits the production of more morphogen A (autoinhibition) as well as production of morphogen I. Morphogen I, however, promotes the production of morphogen A (lateral activation).


C. In Turing’s model, the reaction-diffusion dynamics can tell us how the limb bud acquires its proximal- distal polarity as well as how the number of digits is regulated at the distal tip of the limb.


D. The reaction-diffusion system has been proposed to be sufficient for establishing patterns of precartilage and noncartilage tissues.


E. According to this model, along the proximal-distal axis the AER dividing into two domains 1-the inhibitory domain 2-the active domain.


F. According to this model, along the proximal-distal axis the AER dividing into three domains 1-the inhibitory domain 2-the active domain 3-frozen domain.


Which of the following combinations are incorrect?


TLS Online TPP Program

#Question id: 28051

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the most probable fate of misfolded proteins when attempts to refold it fail? 

TLS Online TPP Program

#Question id: 23963

#Unit 8. Inheritance Biology

What type of gene mutation happens when there is loss of a chromosomal segment?

TLS Online TPP Program

#Question id: 2093

#Unit 2. Cellular Organization

Which of the following is transmembrane proteins?

TLS Online TPP Program

#Question id: 2825

#Unit 2. Cellular Organization

Metaphase chromosomes can be identified

a. by shape.                 

b. by the size and number of introns.

c. by banding patterns with Giemsa reagent.

d. by chromosome painting.