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Describe the main functions of political parties in the UK today.

We must first identify precisely what the question is asking of us. This is an example of a "Describe..." question, which for A-Level Politics does not require analysis as much as explanation. I...

Answered by Jay S. • Politics tutor

20443 Views

Describe the similarities and differences in form between DNA and RNA

DNA and RNA have many similarities. They are both formed of a backbone made from sugar and phosphate groups, however DNA is formed of the sugar deoxyribose, and RNA is formed of ribose sugars. Attached to...

Answered by Kristel B. • Biology tutor

4388 Views

What is the significance of using 'if and only if' in Philosophy instead of simply 'if'?

Often in Philosophy (and Maths) we may come across the phrase 'if and only if', regularly abbreviated as 'iff' and denoted by an arrow pointing in both directions. <-> Logicians refer to this as a b...

Answered by Alexandra W. • Philosophy tutor

3045 Views

Differentiate y=ln(ln(x)) with respect to x.

To solve this question we need to understand the process of implicit differentiation, which is a case of using the chain rule. If you remember the chain rule states that for y=f(g(x)), we have y'=f'(g(x))...

Answered by Marek K. • Maths tutor

5098 Views

What is the purpose of a catalytic converter, and what is the reaction equation of a process that it catalyses?

Catalytic converters are used in motor vehicles.They catalyse the conversion of potentially harmful gases produced in the combustion of motor fuel, into less harmful gases.The reactants for such a convers...

Answered by Annie B. • Chemistry tutor

3915 Views