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A balanced diet supplies all the essential nutrients for the body to function. There are 7 essential nutreints, each with a differnt function in the body. Carbohydrates provide energy Fats/lipids act as a...

The primary structure of a protein involves a sequence of amino acids. This forms a polypeptide chain and there are 20 different amino acids that may contribute to the primary protein structure. The secon...

Genotype is the genetic composition for a particular phenotype. It involves both alleles from both the father and mother. So a genotype of the colour of eyes (blue) could be bb or BB or Bb. 

Evolution by natural selection needs three conditions to be satisfied: variation, heredity, and competition (also called differential fitness).

1. There must be variation in a popula...

Homeostasis can simply be described as the maintenance of a constant internal environment. Human bodies must get rid of accumulating toxic substances which can harm the body. Things like sugar concentrati...