An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?

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#Question id: 8694

#SCPH06 I Botany

Which of the following is (are) problematic when the goal is to construct phylogenies that accurately reflect evolutionary history?

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#Question id: 1295

#SCPH05 I Biotechnology

What signal is released by endothelial cells to recruit circulating leukocytes?

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#Question id: 13064

#SCPH01 Biochemistry

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 techniques doesn’t involve use of a secondary antibody?

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#Question id: 3036

#SCPH28 | Zoology

During which phase would penicillin, an antibiotic that inhibits cell-wall synthesis, be most effective?

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#Question id: 4369

#SCPH28 | Zoology

Which of the following is an incorrect association between transcription factors and their characteristics?