Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
an organic compound that always contains the elements carbon, hydrogen, oxygen and nitrogen and is made up of building blocks (monomers) called amino acids.
a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. A...
the movement of respiratory gases across a respiratory surface.
animals with three cellular body wall layers: the ectoderm, mesoderm and endoderm.
the structure that separates the right ventricle from the pulmonary artery. It prevents the...