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Explain the Polymerase Chain Reaction (PCR) as a technique to make copies of DNA.

PCR takes place in three stages - denaturation, annealing, and extension. The process begins with a very small quantity of DNA being loaded into a PCR machine. The hydrogen bonds that exist between the tw...

Answered by Aashna B. Biology tutor
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Prove algebraically that n^3+3n^2+2n+1 is odd for all integers n

To show this we should consider when n is odd and when n is even,If n is odd then we can find an m such that n=2m+1. Substituting n=2m+1 and expanding gives 8m^3+12m^2+6m+1+12m^2+12m+3+4m+2+1=8m^3+24m^2+2...

Answered by Alistair P. Maths tutor
4165 Views

If a star with a radius of 600000km has a surface temperature of 6000K, calculate its luminosity

Use the formula Luminosity = (Surface temperature)^4Surface area Stefan's constantCalculate surface area with 4piradius^2Area=4.5210^18therefore luminosity= 4.5210^18 * (6000)^4...

Answered by Physics tutor
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What happens at the junction between neurons?

Neurons are the basic cells in the nervous system. They are made up of a soma, axon, dendrites and synapse. The synapse is the end part of the neuron that is in charge of sending a message from one neuron...

Answered by Sean D. Biology tutor
2815 Views

Why is cyclohexene able to react with bromine water, but Benzene isn't

Cyclohexene's structure is 6 carbons bonded in a ring, with a single double bond existing between carbons 1 and 6Benzene is also a 6 carbon ring, however it has a delocalised electron ring around the stru...

Answered by Chemistry tutor
14870 Views

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