In SDS-PAGE, protein sample is first treated with detergent sodium dodecyl sulfate (SDS), in order to

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#Question id: 12999

#Section 2: General 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. 

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#Question id: 13000

#Section 2: General Biology

Identify the correct statement regarding the structure

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#Question id: 13001

#Section 2: General 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.

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#Question id: 13023

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following enzymes are required for end labelling?

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#Question id: 13024

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Inset and the vector can be ligated if they are digested by a pair of –

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#Question id: 13025

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which enzyme is used for homopolymer tailing?