Which of the following is not classified as an axial flow impeller? 

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#Question id: 13058

#SCPH01 Biochemistry

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 following true about real time PCR?

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#Question id: 11273

#SCPH28 | Zoology

Use the following diagram of a hypothetical food web to answer the question. The arrows represent the transfer of energy between the various trophic levels. Which letter represents an organism that could only be a primary consumer and secondary carnivores respectively?

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#Question id: 747

#SCPH28 | Zoology

In nucleic acids, the bases are covalently attached to the 1-position of a pentose sugar ring, to form a:

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#Question id: 5085

#SCPH01 Biochemistry

An embryo with meroblastic cleavage, extraembryonic membranes, and a primitive streak must be that of ________.

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#Question id: 2628

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

Choose true statement about lac repressor;