TLS Online TPP Program
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TLS Online TPP Program
#Question id: 12998
#Unit 1. Molecules and their Interaction Relevant to Biology
Match with appropriate bonding pattern
| Helix type | Hydrogen bonding |
| a. α-helix | 1. n, n+3 |
| b. 310 helix | 2. n, n+5 |
| c. π helix | 3. n, n+4 |
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: 13000
#Unit 1. Molecules and their Interaction Relevant to Biology
Identify the correct statement regarding the structure
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: 13193
#Unit 1. Molecules and their Interaction Relevant to Biology
Data, collected from DNAs of a great many different species, led Chargaff to the following conclusions:
A. The base composition of DNA generally varies from one species to another.
B. DNA specimens isolated from different tissues of the same species have the different base composition.
C. The base composition of DNA in a given species changes with an organism’s age, nutritional state, or changing environment.
D. In all cellular DNAs, the sum of the purine residues equals the sum of the pyrimidine residues.
Which of the above statements are INCORRECT regarding Chargaff’s rule?
TLS Online TPP Program
#Question id: 13194
#Unit 1. Molecules and their Interaction Relevant to Biology
If we have the sequence 5’-ATGTC-3’ on one chain, the opposite chain must have the complementary sequence