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Most of our characteristics are encoded by a pair of alleles. These are different forms of the same gene, one inherited from the father and one from the mother. Inheriting a mutated allele can lead to diseas...

Enzymes are biological catalysts. They speed up reactions although they are not changed in the reaction. Enzymes are proteins, and therefore are folded chains of amino acids with a specific shape. This shape...

When a course of antibiotics is taken, non-resistant bacteria should be killed. However, genetic mutations can lead to certain individuals becoming resistant to a particular antibiotic. The mutated gene that...

Photosynthesis is the process by which green plants and some bacteria absorb light energy from the sun using chlorophyll (a pigment in the leaves of plants responsible for the green colour) which leads to nu...

Break this question down into the four stages: primary, secondary, tertiary and quarternary and for each one describe the structure and what the non-covelant interactions are that hold the protein together. ...