If the equilibrium constant for the reaction

A + 2B ↔ C + 5/2 D

has a value of 4.0, what is the value of the equilibrium constant for the reaction

2C + 5D ↔ 2A + 4B

at the same temperature?

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#Question id: 3918

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is true, concerning rho?

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#Question id: 15684

#Section 1: Engineering Mathematics

If  then (x , y)

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#Question id: 3891

#Section 3: Genetics, Cellular and Molecular Biology

Protein amino acid side chains can hydrogen bond in the major groove of DNA, and discriminate between each of the four possible base pairs.  In which one of the following groups of amino acids can all three members potentially be used in such DNA-protein recognition?

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#Question id: 13054

#Section 7: Recombinant DNA technology and Other Tools in 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.

What would the expected effect be on a PCR reaction if the primers used were slightly shorter and more variable than the intended oligonucleotide sequences?

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#Question id: 10804

#Section 6: Plant, Animal and Microbial Biotechnology

Major types of alkaloids, their amino acid precursors, and well-known examples of each type;

Alkaloid class	Biosynthetic precursor	Examples
A. Pyrrolidine	i. Lysine	a. Coniine
B. Tropane	ii. Ornithine	b. Retrorsine
C. Piperidine		c. Lupinine
D. Pyrrolizidine		d. Nicotine
E. Quinolizidine		e. Atropine and Cocaine

Which of the following combination from the given table is correct?