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Biology
A Level

How does DNA replication work?

DNA replication is called semi-conservative, because each original strand is used to create a new strand. In order to do this, first we need to separate the two strands: they are unwound and unzipped by t...

Answered by Ellie T. Biology tutor
3102 Views

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 b...

Answered by Joanna D. Biology tutor
2334 Views

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...

Answered by Lorissa F. Biology tutor
53905 Views

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 pote...

Answered by Biology tutor
11363 Views

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 p...

Answered by Biology tutor
2102 Views

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