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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?

#SCPH05 I Biotechnology

  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: 311

#SCPH28 | Zoology

Which of the following has no contribution to the stability of tRNA?
TLS Online TPP Program

#Question id: 403

#I Life Science/ Life Sciences Group – I-V

For the reaction A -> B, DG'° = –60 kJ/mol.  The reaction is started with 10 mmol of A; no B is initially present.  After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the most likely explanation?
TLS Online TPP Program

#Question id: 4765

#SCPH01 Biochemistry

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?
TLS Online TPP Program

#Question id: 15209

#SCPH05 I Biotechnology

Agarose gels are formed by suspending dry agarose in aqueous buffer, in which usually Agarose concentration between
TLS Online TPP Program

#Question id: 3053

#SCPH05 I Biotechnology

Bacterial culture contains 1000/ mL in the exponential growth phase. If you consider a generation time of 20 minutes, the total number of organisms / mL 60 minute will be