Practice Questions

TLS Online TPP Program

#Question id: 9605

A phylogenetic tree that is ʺrootedʺ is one

#Unit 9. Diversity of Life Forms

that extends back to the origin of life on Earth.
at whose base is located the common ancestor of all taxa depicted on that tree.
that illustrates the rampant gene swapping that occurred early in lifeʹs history.
that indicates our uncertainty about the evolutionary relationships of the taxa depicted on the tree.

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TLS Online TPP Program

#Question id: 27071

#Unit 1. Molecules and their Interaction Relevant to Biology

Bond forces and their strength are given match them correctly

TLS Online TPP Program

#Question id: 823

#Unit 1. Molecules and their Interaction Relevant to Biology

chaotropic agents such as guanidinium ion and urea, the efficiency of the chaotropic agent is measured in terms of-

TLS Online TPP Program

#Question id: 13001

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect

a) antiparallel β sheets are frequently found and they are quite more stable because of more no. hydrogen bond presence and linear H bonding pattern.

b) antiparallel β sheets are frequently found and they are quite more stable because of more no. hydrogen bond presence and having distorted H bonding pattern.

c) parallel β sheets are relatively less stable and mostly found in core of protein.

d) parallel β sheets are relatively more stable and mostly found in core of protein.

TLS Online TPP Program

#Question id: 13000

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the correct statement regarding the structure

TLS Online TPP Program

#Question id: 12999

#Unit 1. Molecules and their Interaction Relevant to Biology

Proline and glycine both disturb the symmetry of α-helix which of the following are true regarding to these two amino acids

a) proline changes the orientation of hetropolymeric α-helix hence proline can be placed only as 1st amino acid residue near to C-terminus

b) proline changes the orientation of polymeric α-helix hence proline can be placed only as 1st amino acid residue near to N-terminus

c) glycine disrupts the heteropolymeric α-helix by changing the helicity.

d) homopolymer of proline and glycine can form stable helix.

TLS Online TPP Program

#Question id: 12998

#Unit 1. Molecules and their Interaction Relevant to Biology

Match with appropriate bonding pattern