Defence and foreign policy. One of the key reasons for Federation was to achieve a united defence force which could better protect Australia. Around the 1880s, the Australian colonies had become increasingly concerned over the close proximity of foreign powers.
Protein Structure Determination. The three-dimensional shape of a protein is determined by its primary structure. The order of amino acids establishes a protein's structure and specific function. The distinct instructions for the order of amino acids are designated by the genes in a cell.
There are four types of protein structure: 1  Primary Structure: sequence of amino acids in the chain. 2  Secondary Structure: the shape of the protein molecule caused by hydrogen-bonding between -C=O and -N-H groups within the chain. 3  Tertiary Structure: the interaction between R-groups that causes folding and bending.