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#Question id: 752


The A260/A280 ratio of a double-stranded DNA sample can be used to assess its purity. The value for the pure DNA is ----------------

#Part-A Aptitude & General Biotechnology
  1. 3

  2. 1.8

  3. above 2

  4. below 1.5


Answer:- Option(s): 2


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#Question id: 691

#Part-B Specialized Branches in Biotechnology

Roughly how many amino acids are there in one turn of an alpha helix?

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#Question id: 692

#Part-A Aptitude & General Biotechnology

 In the alpha helix the hydrogen bonds:

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#Question id: 693

#Part-A Aptitude & General Biotechnology

In an alpha helix, the R groups on the amino acid residues:

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#Question id: 693

#Part-B Specialized Branches in Biotechnology

In an alpha helix, the R groups on the amino acid residues:

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#Question id: 695

#Part-B Specialized Branches in Biotechnology

A D-amino acid would interrupt an alpha helix made of L-amino acids. Another naturally occurring hindrance to the formation of an alpha helix is the presence of:

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#Question id: 697

#Part-B Specialized Branches in Biotechnology

The major reason that antiparallel B-stranded protein structures are more stable than parallel B-stranded structures is that the latter:

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