Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
convolutions of the inner membrane of mitochondria.
extremely hard, calcium-rich substance which covers the crown of the tooth.
a thick layer inside the primary cell wall. It consists mainly of cellulose, hemicellulose and...
(also called pith rays) sections of the medulla that occur between the vascular bundles.
a molecule that accelerates (speeds up) a chemical reaction, by lowering its activation energy,...
(also called the pith) the central part of the stem that consists of large, thin-walled...