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Amylase is the enzyme that controls the breakdown of starch to glucose. Describe how the student could investigate the effect of pH on the breakdown of starch by amylase.

Breakdown answer into 5 simple marks that can be easily understood and remembered:Control variable - Keep amount of amylase and starch the sameDependent Variables - change PH levels 3 times Keep temperature ...
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Answered by Kitty P. • Biology tutor
12746 Views

What is the difference between a contractionary and expansionary fiscal policy?

First of all, it is important to understand what a fiscal policy really is. This is a tool used by the government to influence the aggregate demand of the economy and consequently, the total output produced ...
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Answered by Leonor F. • Economics tutor
26371 Views

How to factorise equations, or expand factorised equations?

Factorising x 2 -100: As there is no common element in x 2 or 100, we know this must consist of two sets of brackets not just one. we know both brackets must contain and x, and that which ever two numbers mu...
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Answered by Harleen H. • Maths tutor
3535 Views

Describe 2 ways in which the body prevents entry of microorganisms into the body

-acid in the stomach kills any pathogens-skin acts as a physical barrier to pathogens-hair in the nose and ears trap any pathogens -saliva & mucous trap pathogens. The bronchi have villi that help move p...
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Answered by Sara H. • Biology tutor
4378 Views

How to find the equation of a line from a graph?

Location of t wo points that lie on the line is needed to define an equation of the line. The general equation of a line is in the form y = mx + c , where m is the gradient of the line and c is the y coordin...
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Answered by Tomas K. • Maths tutor
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