Top answers

What is an acid-base pair?

Two species that transform into each other by loss or gain of a proton.
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Answered by Laura H. • Chemistry tutor
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What is the role of Tropomyosin in myofibril contraction?

Tropomyosin helps to regulate myofibril contraction. Before contraction, tropomyosin covers the myosin binding sites on the actin molecule, preventing the myosin heads from binding. During contraction, calci...
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Answered by Laura H. • Biology tutor
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Why is sickle cell disease most common among people living in tropical regions, and their descendants?

Sickle cell disease is caused by a recessive allele of the haemoglobin gene. When two copies are present (i.e. it is homozygous), many red blood cells become sickle-shaped, leading to disease. However, if on...
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Answered by Sean G. • Biology tutor
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Differentiate x^5 + 3x^2 - 17 with respect to x

When you are differentiating, use the formula: The differential of ax^n is (n*a) x^(n-1). Or in words: 'multiply by the power, then reduce the power by 1.' Hence for our question, x^5 differentiates to 5x^(5...
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Answered by David L. • Maths tutor
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What Is straight line depreciation?

In financial accounting we have different types of depreciation, based on the company's accounting policy. One of the methods is straight line depreciation. Assets can be depreciated, so losing thier value i...
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Answered by Ignac S. • Accounting tutor
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