Proteins can be attached to the phospholipid bilayer plasma membrane by covalently linked hydrocarbon groups. Which of the following mechanisms are not employed in this anchoring?

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#Question id: 4161

#SCPH28 | Zoology

The link between an activated amino acid and tRNA is an __ bond between the __ of the amino acid and a hydroxyl group of the tRNA.

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#Question id: 13062

#SCPH05 I Biotechnology

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.

A restriction enzyme cleaves a circular plasmid vector to produce fragments : 1kb, 0.3kb, 2kb, 1kb and 0.3kb. How many bands will be visible on agarose gel?

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#Question id: 3644

#SCPH06 I Botany

In replication: soon after synthesis, the DNA fragments are joined to make one continuous piece of DNA by the enzyme:

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#Question id: 5447

#SCPH06 I Botany

Hydrangea plants of the same genotype are planted in a large flower garden. Some of the plants produce blue flowers and others pink flowers. This can be best explained by which of the following?

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#Question id: 2289

#SCPH01 Biochemistry

According to the endosymbiotic theory, which organelles form from engulfing of cyanobacteria