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TLS Online TPP Program

#Question id: 333

Which of the following feature of RNA adds to its propensity to form double-helical structure?

#SCPH06 I Botany

  1. Watson-Crick base pairing between A:U base pair which has hydrogen bonds between N6 of adenine and C4 of uracil, and between N1 of adenine and N3 of uracil.

  2. Non Watson-Crick base pairing between G:U base pair, which has hydrogen bonds between N3 of uracil and the C6 of guanine, and between the C2 of uracil and N1 of guanine.

  3. Non Watson-Crick base pairing between G:U base pair, which has hydrogen bonds between N3 of guanine and the C6 of uracil, and between the C2 of uracil and N1 of guanine.

  4. Watson-Crick base pairing between A:U base pair which has hydrogen bonds between N6 of uracil and C4 of adenine, and between N1 of adenine and N3 of uracil.

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TLS Online TPP Program

#Question id: 18677

#SCPH01 Biochemistry

Point mutations in DNA, such as occur in a range of human diseases, can be identified by 
TLS Online TPP Program

#Question id: 18678

#SCPH01 Biochemistry

which of the following technique can be analysed of PCR products from HIV-I allowed the identification of between 200 000 and 500 000 viral particles per cubic centimetre of serum.
TLS Online TPP Program

#Question id: 18679

#SCPH01 Biochemistry

Chiral compounds can be resolved using
TLS Online TPP Program

#Question id: 18680

#SCPH01 Biochemistry

DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680 kb This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source. Thus, by comparing their eating habits, food sources, etc. the source of the infection can be traced to a restaurant, food item. The fingerprints are created and analysed by
TLS Online TPP Program

#Question id: 18681

#SCPH01 Biochemistry

Highly heterogeneous mixtures of proteins such as cell lysates or tissue extracts should be completely fractionated into individual proteins so as to obtain an overall picture of the protein composition and to enable location of individual proteins. The highest resolution is obtained 
TLS Online TPP Program

#Question id: 18682

#SCPH01 Biochemistry

Which technique is shown in given representation