Monday February 22, 1999
Announcements: Review Session tonight cancelled, so are office hours for tomorrow.

Lecture notes:

Reactants: organic and inorganic substances able to enter into a reaction; also called substrates or precursors.

Metabolites (intermediates): compounds being funneled through a metabolic pathway; often, intermediate forms in
assembly or breakdown reactions.

Enzymes: proteins that serve as catalysts (substances that speed up chemical reactions)

Cofactors: coenzymes (such as FAD and NAD+) and metal ions that help enzymes catalyze a reaction or that carry atoms
or molecules stripped from the substrate to another site.

Energy carriers: mainly ATP, which readily donates energy to diverse reactions.

End products: the substances present at the conclusion of a metabolic pathway.