Biology > MARK SCHEMES > Bio Mark 2021 2H 1-GCSE COMBINED SCIENCE TRILOGY – 8464B2H (All)

Bio Mark 2021 2H 1-GCSE COMBINED SCIENCE TRILOGY – 8464B2H

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Question Answers Extra information Mark AO / Spec. Ref. 01.1 1 AO2 4.6.1.3 01.2 any one from: • 2 strands / chains that are twisted / coiled / spiralled • double helix • (long) polymer allow cro ... ss links between 2 strands / chains allow reference to nucleotides or sugars, phosphates and bases 1 AO1 4.6.1.3 01.3 amino acids protein in this order only allow polypeptide 1 1 AO1 4.6.1.3 01.4 all the genetic material (of an organism) allow DNA / genes for genetic material ignore chromosomes 1 AO1 4.6.1.3 01.5 tracing how aboriginal people spread across Australia 1 AO2 4.6.1.3 01.6 variation ignore genetic/environmental 1 AO1 4.6.2.1 [Show More]

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