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TLS Online TPP Program

#Question id: 7221

The cells of the neural plate are characterized by expression of the Sox family of transcription factors (Sox1, 2, and 3). These factors-

#Unit 5. Developmental Biology
  1. Activate the genes that specify cells to be neural plate and inhibit the formation of epidermis and neural crest by blocking the transcription and signaling of BMPs.
  2. Inhibit the genes that specify cells to be neural plate and activate the formation of epidermis and neural crest by blocking the transcription and signaling of BMPs.
  3. Activate the genes that specify cells to be neural plate as well as formation of epidermis and neural crest.
  4. Inhibits both the genes that specify cells to be neural plate as well as formation of epidermis and neural crest.
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TLS Online TPP Program

#Question id: 27078

#Unit 1. Molecules and their Interaction Relevant to Biology

The combined repulsive and attractive van der Waals terms are described by plots of the potential energy as a function of interatomic separation distance



Which of the following's assumptions can be drawn from given graph related phenomenon
1. As the interatomic distance increases attractive forces act dominantly by the factor of 1/r12 
2. As the interatomic distance increases attractive forces act dominantly by the factor of 1/r6 
3. As the interatomic distance decreases repulsive forces act dominantly by the factor of 1/r6 
4. As the interatomic distance decreases repulsive forces act dominantly by the factor of 1/r12 
TLS Online TPP Program

#Question id: 27079

#Unit 1. Molecules and their Interaction Relevant to Biology

The van der Waals interaction as a function of interatomic distance r, then which of the following equation is correct 
TLS Online TPP Program

#Question id: 27080

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement about Vander-wall interaction  
1. Van der Waals potential (Evdw) is the sum of all interactions over all atoms
2. Van der Waals potential (Evdw)  is calculated by
3. This type of interaction is often called a 6–12 interaction, or the Leonard Jones potential.
4. Van der Waals forces are extremely weak, especially when compared with other forces influencing protein conformation
TLS Online TPP Program

#Question id: 27081

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly describing the A dihedral angle or torsion angle 
TLS Online TPP Program

#Question id: 27082

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement regarding β -turns
TLS Online TPP Program

#Question id: 27083

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly describing the differences between β Turn type I & β Turn type II

(1) type I & II i + 1 values differ only in psi values 

(2) type I & II i + 1 values differ only in phi values 

(3) type I & II i + 2 values differ only in phi values 

(4) type I & II i + 2 values differ only in psi values