IB Biology C1.1 Definitions

This page contains our IB Biology definitions for C1.1. By learning each one of these definitions, you will fully cover the content for IB Biology 'Enzymes & metabolism'.
anabolic reaction

A reaction that bonds monomers together to form a macromolecule

catabolic reaction

A reaction that breaks a macromolecule down into monomers

enzyme

A protein that speeds up and controls the rate of reactions of metabolism by lowering the activation energy required for a reaction to happen

enzyme catalysis

Breaking down of molecules by enzymes

immobilized enzyme

Enzymes attached to another material, such as beads, so they can be industrially recycled

intermolecular forces

The forces between molecules

macromolecule

A big molecule composed of two or more monomers

metabolism

The sum of all chemical reactions taking place within an organism

molecular biology

A study that explains the living processes in terms of the chemical processes involved

molecule

A group of two or more atoms held together by single, double, or triple covalent bonds

monomer

A small molecule

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