TLS Online TPP Program

#Question id: 7063


The avian embryo comes entirely from

#Unit 5. Developmental Biology
  1. Epiblast
  2. Primary hypoblast
  3. Secondary hypoblast
  4. Endoblast
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TLS Online TPP Program

#Question id: 15907

#Unit 5. Developmental Biology

Dsx is processed in a “default” manner to make the :

TLS Online TPP Program

#Question id: 34090

#Unit 3. Fundamental Processes

A. DnaA is in the active form only when bound to ATP.
B. All three13-bp repeats of origin must be opened for the initiation
C. 9-bp repeats are found outside of 245 bp origin 
D. DnaA has a weak intrinsic activity that converts the ATP to ADP, this is enhanced by a factor termed Had

Choose true and false

TLS Online TPP Program

#Question id: 26487

#Unit 3. Fundamental Processes

CAP–cAMP binds upstream to promoters DNA and target bends the DNA considerably about

TLS Online TPP Program

#Question id: 882

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose correct statements about thermophilic proteins

I. The proteins found in thermophilic species are much more stable than their mesophilic counterparts.

II. All thermostable proteins have such a high incidence of salt bridges

III. the most important of which are an increased size of the protein’s hydrophobic core, an increased size of the interface between its domains and/or subunits, and a more tightly packed core as evidenced by a reduced surface-to-volume ratio.

IV. Several of these thermostable enzymes have a superabundance of salt bridges on their surfaces.

TLS Online TPP Program

#Question id: 13061

#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.
Arrange in the order of their increasing capacity: