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Draw a graph on the effect of an increase in temperature on the rate of an enzyme controlled reaction. Explain the shape of the curve and suggest why the temperature of a mammal is maintained just below the optimum temperature.

As kinetic energy increases, enzyme and substrate molecules collide with more frequency allowing more enzyme substrate complexes to be formed. With increasing temperature, the tertiary structure of the prote...
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Answered by Sadia Z. • Biology tutor
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How can I efficiently plan an essay in an exam?

It is always helpful to plan your essay before you begin. Planning is essential to have a clear, confident argument. Once you have selected your question, loosely annotate it - underlining key words (like th...
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Answered by Emily D. • English tutor
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To what extent is (third degree) price discrimination beneficial to consumers and producers?

Third degree price discrimination refers to when a profit-maximising firm has two different prices for different demand groups, for example, a cinema would charge the student group less than what they charge...
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Answered by Acacia T. • Economics tutor
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What is epigenetic control of gene expression? How does it occur?

Strictly speaking, it is the heritable changes in the function of your genes that do not involve a change in your DNA's base sequence. Simply put, it is the way in which we regulate whether a gene is transcr...
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Answered by Fareema F. • Biology tutor
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How is blood glucose concentration controlled by hormones?

The three main hormones to consider are: insulin, glucagon, and adrenaline. All three act on receptors on their target cells. Insulin results in the mobilisation of channel proteins in cell vesicles that are...
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Answered by Fareema F. • Biology tutor
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