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What is an enzyme? And what things can affect them?

An enzyme is a substance produced by a living organism than enables reactions to happen faster or more efficiently. Each enzyme has a specific shape called an active site which a certain molecule can fit int...
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Answered by Susannah R. • Biology tutor
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Describe the basic structure of a DNA and complementary base pairing.

DNA is a large polymer consisting of two DNA strands that form a double helix. Each strand is made up of bases. In DNA, there are four different bases: Adenine, Thymine, Cytosine & Guanine Pairs of bases...
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What is an Extremophile?

An extremophile is an organism that can live in extreme conditions such as high temperatures, high pressures and high acidity. An example of an extremophile is Giant tube worms. They live miles beneath the o...
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Answered by Emily O. • Biology tutor
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What is osmosis and why does it occur?

Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration through a partially/selectively permeable membrane (PPM) . It occurs because of conce...
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Answered by Anita H. • Biology tutor
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What is the process of maintaining a constant internal enviornment, and why does it matter?

The process by which our bodies maintain a constant internal environment is homeostasis. This includes things such as body temperature, blood glucose levels and pH levels. This is important because there a v...
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Answered by Eleanor M. • Biology tutor
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