Which of the following is incorrect regarding to α-helix

a) In the α helix, the first four NH groups and last four CO groups will normally lack backbone  hydrogen bonds.

b) the length of an amino acid in α-helix reduced almost 3 times than linear structure.

c) the frequent occurrence of Pro and Gly residues favour α-helix formation.

d) dihedral (ϕ and ψ) angle should be close to -57 and -47.

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#Question id: 12732

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

When the absorbance of DNA at ____ nm increases as the DNA becomes denatured , the phenomenon known as the ______.

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#Question id: 12733

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

It provides a key marker of potential disease development and reaction to individual treatment.

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#Question id: 12734

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

Name the US-based company which is able to provide personal genetic information based on analysis of disease genes such as diabetes and others.

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#Question id: 12735

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

Match the following:

A. Maize                                  i. Modified seed storage protein

B. Tomato                              ii. Modified ripening

C. Canola                                 iii. Resistance to insects

D. Soya Bean                         iv. Seed oil modification

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#Question id: 12736

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

Match the following:

1. Emphysema                                                    i.  Fibroblasts

2. Immune System Disorder                        ii.  HPRT cLesch-Nyhan syndrome                           iv. T and B cells

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#Question id: 12737

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

 Name the technique which is used to detect abnormalities at an early stage.