In the following diagram of the first step in the reaction catalyzed by the protease chymotrypsin, the process of general base catalysis is illustrated by the number ________, and the process of covalent catalysis is illustrated by the number _________.

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#Question id: 23979

#Unit 8. Inheritance Biology

During an heterozygous condition, deletion on to the homologous chromosome and due to deletion causing the expression of recessive allele. This is the case of

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#Question id: 13062

#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.

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: 23706

#Unit 13. Methods in Biology

Which of the following cuts DNA molecules at specific locations?

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#Question id: 27027

#Unit 10. Ecological Principles

Herbivores May Overcome Plant defenses through Mechanical adaptations, example of these adaptations are

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#Question id: 3569

#Unit 8. Inheritance Biology

Haploid cells in the human body: