TLS Online TPP Program

#Question id: 19159


In anion exchange chromatography,

#Unit 13. Methods in Biology
  1. the column contains negatively charged beads where positively charged proteins bind
  2. the column contains positively charged beads where negatively charged proteins bind
  3. the column contains both positive and negatively charged beads where proteins bind depending on their net charge
  4. all of these
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TLS Online TPP Program

#Question id: 16787

#Unit 13. Methods in Biology

The following observations are arranged in ascending order. The median of the data is 15 find the value of x. 
8, 11, 12, x + 6, 17, 18, 23 

TLS Online TPP Program

#Question id: 675

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is not true about an α-helix?

TLS Online TPP Program

#Question id: 2882

#Unit 2. Cellular Organization

SUMO (small ubiquitin-related modifier) proteins are ∼10-kD polypeptides that function as reversible post-translational protein modifiers. They form isopeptide bonds with ɛ-amino groups of acceptor Lys residues in hundreds of target proteins in a process termed as sumoylation. Which of the following statements is correct regarding this modification?

TLS Online TPP Program

#Question id: 15878

#Unit 12. Applied Biology

A vitamin which has been found to inhibit callus formation and improve growth and quality of shoots.

TLS Online TPP Program

#Question id: 13063

#Unit 13. Methods in Biology

Precision will be reduced, but yield will be increased
Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
Which of the statement is worng? Aminopetrin………s