Search over 10,000 free study notes

When the core body temperature falls below the optimum, vasoconstriction occurs meaning blood flow to the vessels supplying the skin is reduced. This is beneficial as it reduces lost energy. The body also...

The theory of Evolution by Natural Selection was first proposed by Darwin in 1859. Evolution is the observation that species change over time, for example the beak of birds getting larger or the neck of g...

Enzymes are globular (globe-like) proteins, meaning they exist as 3D structures. As a protein, it is composed of a chain of amino acids which is able to fold into secondary structures such as alpha-helice...