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How does natural selection lead to evolution?

Evolution describes the divergence of species by natural selection. It is best to think of this at the level of the gene pool. The gene pool is all the genes contained within a population. The gene pool is a...
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Answered by Michelle M. Biology tutor
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What is the difference between competitive and non-competitive inhibition of enzymes?

The main difference is that in competitive inhibition, the inhibitor binds directly to the active site of the enzyme. This therefore prevents the substrate from binding to the enzyme and forming the enzyme-s...
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Answered by Samantha D. Biology tutor
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Quick study tips; how do I study successfully?

So the exam is coming up. Your University place is at stake. You're parents are counting on you. Don't panic! Before you consider diving into that pile of revision you've forsaken for the Game Of Thrones box...
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Answered by Michelle M. Biology tutor
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What is the role of DNA?

To provide all the necessary information needed for cell survival and also pass down crucial information to its daughter cells (either through meiosis or mitosis).
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Answered by Vasiliki K. Biology tutor
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Explain how during the light independent reaction of photosynthesis carbon dioxide is converted to organic substances.

Questions involving processes in respiration and photosynthesis usually give high marks in the Biology A level AQA unit 4 papers. By understanding and learning key parts of the processes, you can ensure your...
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Answered by Natalie C. Biology tutor
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