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How is blood glucose maintained in the body?

The control of blood glucose levels is an example of homeostasis . The human body requires glucose for normal respiration of cells, but the blood levels is in a narrow range . Insulin and glucagon are hormon...
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Answered by Mirac D. • Biology tutor
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What is the role of mitochondria in animal cells?

Mitochondria are organelles which provide the energy used up by the cell in respiration , through producing molecules called ATP . Some cells have loads of mitochondria, and other cells have very little. For...
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Answered by Mirac D. • Biology tutor
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How would I solve x^2 + 7x + 10 = 0

The first step of solving this equation to find out what x is, is to factorise it. This means grouping it into a set of double brackets which will take the form (x+a)(x+b)=0. The a and the b must give the co...
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Answered by Will N. • Maths tutor
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When should you use the subjunctive?

Many students can't get their heads around the subjunctive but it's much easier than it seems! A really handy way to remember when to use the subjunctive is by using the accronym 'WEIRDO': W ishes: When some...
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Answered by Yasmine A. • Spanish tutor
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Factorise (x+3)(x-8)

(x+3)(x-8) x*x= x^2 x*-8= -8x 3*x= 3x 3*-8= -24 =x^2 - 8x + 3x - 24 =x^2 - 5x - 24
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Answered by Nikhitha J. • Maths tutor
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