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What is expected in Paper 1?

Paper 1 is a commentary on an unseen text. They will give you two different passages, one in prose and one piece of poetry and you decide on one of them to comment on. When commenting on the passage always r...
CS
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Why are enzymes such as proteases and lipases used in some washing powders?

The role of enzymes such as proteases and lipases in the body is to break down proteins and fats respectively during digestion. Proteins are broken down into amino acids and fats are broken down into fatty a...
MB
Answered by Megan B. • Biology tutor
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Explain the difference between Long Run Total Costs and Short Run Total costs

In the short run at least one of the factors of production (Land, Labor, Capital and Enterprise) is fixed. Due to this there are short run fixed costs relating from the fixed factors of production. In Econom...
MC
Answered by Michael C. • Economics tutor
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Explain how a small release of glucagon into the body can cause a rapid increase of blood glucose

A low level of glucose in the blood will stimulate secretion of glucagon to increase the amount of glucose in the blood. Glucagon causes the liver to release stores of glycogen to be converted to glucose. th...
ZH
Answered by Zainab H. • Biology tutor
3074 Views

For y=x/(x+4)^0.5, solve dy/dx

As x is present as both numerator and denominator (top & bottom), we're going to use the quotient rule to solve this. The quotient rule is as follows:For y=f(x)/g(x), dy/dx=(f'(x).g(x)-f(x).g'(x))/((g(x)...
TM
Answered by Thomas M. • Maths tutor
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