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IB Biology D1.1 Definitions

This page contains our IB Biology definitions for D1.1. By learning each one of these definitions, you will fully cover the content for IB Biology 'Further DNA replication'.

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
HL

acetylation

The addition of an acetyl group to histone N-terminal tails prevents the nucleosome from packing together and loosens the H1 protein to allow for DNA replication or transcription

HL

lagging strand

The strand that has the replication fork running in the 3' to 5' direction and replication in the 5' to 3' direction

HL

leading strand

The strand that has the replication fork and replication both running in the 5' to 3' direction

HL

Sanger sequencing

A method of base sequencing that involves the use of ddNAs

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