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An enzyme is a globular protein that acts as a biological catalyst.  They work by reducing the activation energy of chemical reactions, which increases the rate of reactions.

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Mitosis and meiosis refer to the way cells reproduce. 
Mitosis sees the cell divide in two, forming two genetically identical diploid cells. The reproduction of cells means mitosis is used by the bod...

Plants that live in these areas need to minimise the rate at which they transpire in order to preserve as much water as possible. 

One way they do this is by reducing their surface area:v...

There are 4 levels you use to describe protein structure. 

Primary Structure - This is the simplest structure of a protein. It is essentially the sequence of amino acids that form a prote...

Firstly, there are chemical differences between the two nucleic acids. DNA has the following structural properties:-double stranded and anti-parallel polymer held together by (relatively) weak hydrogen bo...