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IB Biology B1.2 Definitions

This page contains our IB Biology definitions for B1.2. By learning each one of these definitions, you will fully cover the content for IB Biology 'Further proteins'.

All Topic 1 Sub-topicsA1.1: Water (HL)A1.1: Origin of water A1.2: Nucleic Acids (HL)A1.2: Further nucleic acids B1.1: Carbohydrates And LipidsB1.2: Proteins (HL)B1.2: Further proteins C1.1: Enzymes & Metabolism (HL)C1.1: Further metabolism C1.2: Respiration (HL)C1.2: Further respiration C1.3: Photosynthesis (HL)C1.3: Further photosynthesis D1.1: DNA Replication (HL)D1.1: Further DNA replication D1.2: Protein Synthesis (HL)D1.2: Further protein synthesis D1.3: Mutations (HL)D1.3: Gene editing

amino acid

The building block of proteins

HL

conjugated protein

Proteins with prosthetic groups, often a heme group

hydrogen bonding

The strongest intermolecular force that only occurs between hydrogen and oxygen, nitrogen, or fluorine

HL

integral protein

A protein embedded in the plasma membrane

HL

ionic bond

The electrostatic attraction between oppositely charged ions

HL

peptide bond

The chemical bonds that link amino acids together in a polypeptide chain

polypeptide

A chain of many amino acids bound together by peptide bonds

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