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Biology · Topic 52

Molecular genetics: dna, rna, transcription and translation

Sub-topic 1 2025 · National One-Eighth Free

Mitochondrial dna: structure and inheritance

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Sub-topic 2 2024 · National Preliminary Premium

The genetic code: codons, anticodons and translation

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Sub-topic 3 2026 · National One-Eighth Premium

Mutation

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Sub-topic 4 2025 · National Preliminary Premium

Transcription: rna synthesis from a dna template

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Sub-topic 5 2025 · National Preliminary Premium

Finding the complementary base sequence of an rna strand

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Sub-topic 6 2026 · National Semifinal Premium

The nitrogenous base as the variable component of dna structure

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Sub-topic 7 2026 · National Semifinal Premium

Reverse transcription: synthesizing dna from an rna template

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Sub-topic 8 2025 · National Semifinal Premium

Mitochondrial dna as an example of uniparental (matrilineal) inheritance

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Sub-topic 9 2025 · National Quarterfinal Premium

Nonsense mutations and premature stop codons

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Sub-topic 10 2025 · National Quarterfinal Premium

Dna, chromosomes and the nucleus as genetic material/carrier/location

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Sub-topic 11 2023 · National One-Eighth Premium

Riddle: the nucleosome and chromatin packaging

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Sub-topic 12 2026 · National Preliminary Premium

Types of point mutation: deletion, insertion, and substitution

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Sub-topic 13 2013 · National Preliminary Premium

Dna is transcribed into rna (true/false)

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Sub-topic 14 2013 · National Preliminary Premium

Rna makes proteins by translation, not replication (true/false)

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Sub-topic 15 2013 · National Preliminary Premium

Trna, not mrna, carries amino acids during translation (true/false)

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Sub-topic 16 2016 · National Preliminary Premium

Mutation and recombination as the two main causes of heritable variation

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Sub-topic 17 2017 · National Semifinal Premium

Dna helicase unwinding double-stranded dna by breaking hydrogen bonds

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Sub-topic 18 2017 · National Quarterfinal Premium

G-c base pairs (3 hydrogen bonds) bind more strongly than a-t pairs (2 bonds) (true/false)

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Sub-topic 19 2017 · National Quarterfinal Premium

The dna double helix is held by hydrogen bonds, not ionic bonds (true/false)

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Sub-topic 20 2021 · National Preliminary Premium

The hereditary material in viruses is nucleic acid (dna or rna)

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Sub-topic 21 2021 · National Quarterfinal Premium

Glucose represses transcription of cellulase genes as a metabolic regulation strategy

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Sub-topic 22 2022 · National One-Eighth Premium

True or false: after dna replication there are twice as many centromeres as chromatids

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