tyrosine
(Science: amino acid) One of the twenty amino acids directly coded in proteins. Nonessential in humans since can be synthesised from phenylalanine.
An amino acid found in most proteins; a precursor of several hormones.One of 20 amino acids commonly found in proteins.
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..