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Describe the polymerase chain reaction

The first step of PCR requires the target gene to be located using primers. Primers are short nucleotide sequences that are the complementary to either side of the target gene. The DNA sample containing the ...
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Answered by Tolu T. • Biology tutor
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Considering the work of at least two of the poets you have studied, discuss how the poet’s use of sound devices contributes to meaning.

Sound is a crucial element of poetry because poems are designed to be read aloud. Sensory description and rhetorical devices related to sound are extremely powerful, as they make a description more vivid and...
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Answered by Millie T. • English tutor
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Explain how applying increasing pressure to a Pacinian corpuscle produces a larger change in membrane potential.

When pressure is applied to a Pacinian corpuscle the membrane is distorted, opening the stretch-mediated Na+ channels. This then allows Na+ ions to move in down their concentration gradient which increases t...
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Answered by Madeleine C. • Biology tutor
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Explain what would happen to the pH of a solution of aqueous hydrochloric acid if you add water.

pH is a measure of the concentration of H+ ions contained within a given volume of a solution. Adding water, without increasing the amount of hydrochloric acid particles within the solution, increases the vo...
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Integrate 2x^4 - 4/sqrt(x) + 3 dx

First we will simplify 4/sqrt(x) so it is easier to integrate.sqrt(x) is equal to x 1/2 , therefore 4/sqrt(x) = 4/x 1/2 .We bring up x 1/2 so 4/x 1/2 becomes 4x -1/2 .So now we will integrate the simplified ...
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Answered by Maleehah A. • Maths tutor
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