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Describe the process of DNA replication

DNA replicates via semi-conservative replication . This means one strand acts as the template strand. The enzyme DNA Helicase breaks the hydrogen bonds between base pairs in DNA. This unwinds the DNA, exposi...
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Answered by Joanna D. • Biology tutor
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Why can extreme pH or temperature cause enzymes to denature?

Enzymes are proteins; as such they have a primary, secondary and tertiary structure. Each type of structure helps to hold the enzyme together so that it's substrate - the molecule it specifically binds to - ...
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Answered by Lorissa F. • Biology tutor
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What is the all-or-nothing principle?

The all- or-nothing-law is related to neurons and is the idea that a neuron can only have a full response (fire an action potential) or no response to a stimulus due to its threshold.Once the resting potenti...
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Explain the principle of the surface area to volume ratio and how it applies to gas diffusion in different organisms.

The surface area to volume ratio of an object will decrease as the size of the object increases. This means that a small object with a small volume will have a bigger surface area, as a proportion or fractio...
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Answered by Yan S. • Biology tutor
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Describe the structure of a protein

There are four structures of a protein: the primary, secondary and tertiary. Primary is the sequence of amino acids in the protein. The secondary structure is the way the protein is either folded into a plea...
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