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Cystic Fibrosis (CF) is a recessively inherited disorder. A father is a suffer of CF, while the mother is normal and not a carrier. What is the chance their child will be a carrier of CF? Give your answer as a percentage.

First write a key for the alleles. (normal Allele=T. CF allele=t) If the mother is normal= TT Father is a suffer =tt. Then Draw a punnet diagram for the child Write a key for the punnet diagram. TT-normal. T...
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Answered by Natasha I. • Biology tutor
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Explain why a firm in perfect competition can not experience abnormal profit in the long run.

Perfect competition is a market structure in which an infinite number of firms produces identical products for an infinite number of consumers. It is an ideal and theoretical model. Abnormal (supernormal/eco...
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Answered by Bianca V. • Economics tutor
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Solve the pair of simultaneous equations {4x + y = 5, 3x - y = 2} using i) a graph and ii) an algebraic method

a) Draw graph and find points of intersection (will be done on whiteboard). b) Sum equations to get 7x=7, so x=1 and y=1.
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Answered by Jacob F. • Maths tutor
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Explain how ATP is generated by oxidative phosphorylation.

Electrons and H+ ions are donated to the electron transport chain (located in the inner mitochondrial membrane) from NADH and FADH2 (generated during glycolysis, the Krebbs cycle and the Link reaction). Thes...
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Answered by Katie O. • Biology tutor
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Integrate xcos(x) with respect to x

Using LATEX (Logarithms, Algebra, Trigonometry, Exponential and Complex numbers) to determine which variable is du and which is dv/dx. This is decided by using the above acronym. For example in this question...
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