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Biology · Topic 22

Organs and organ systems

Sub-topic 1 2024 · National Preliminary Free

Melanin: skin pigmentation and uv protection

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Sub-topic 2 2003 · National Semifinal Premium

Melanin: skin pigmentation and uv protection

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Sub-topic 3 2026 · National One-Eighth Premium

Protective coverings of mammalian organs (meninges, pericardium, pleura, tunica albuginea, periosteum, renal capsule)

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Sub-topic 4 2003 · National Semifinal Premium

Protective coverings of mammalian organs (meninges, pericardium, pleura, tunica albuginea, periosteum, renal capsule)

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Sub-topic 5 2026 · National Preliminary Premium

Functions of the mammalian skin

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Sub-topic 6 2026 · National Preliminary Premium

Functions of the mammalian skin

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Sub-topic 7 2026 · National Preliminary Premium

Lobes of the human lungs

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Sub-topic 8 2026 · National Preliminary Premium

The cornea: anterior transparent portion of the sclera

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Sub-topic 9 2025 · National Semifinal Premium

Melanin as the pigment responsible for human skin tone

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Sub-topic 10 2026 · National One-Eighth Premium

Organ regeneration: the liver

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Sub-topic 11 2025 · National Quarterfinal Premium

Mucous membranes at body-environment interfaces

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Sub-topic 12 2024 · National Final Premium

Mucous membranes at body-environment interfaces

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Sub-topic 13 2023 · National Preliminary Premium

Primary (deciduous) dentition: tooth counts per arch and quadrant

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Sub-topic 14 2012 · National Preliminary Premium

Renal pyramids in the kidney

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Sub-topic 15 2012 · National Preliminary Premium

The cornified layer of mammalian skin

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Sub-topic 16 2012 · National Preliminary Premium

The diastema: gap between incisors and cheek teeth in herbivores

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Sub-topic 17 2016 · National Preliminary Premium

The pancreas has both digestive and endocrine roles, not digestion alone (true/false)

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Sub-topic 18 2016 · National Preliminary Premium

The pancreas combines digestive, hormonal and blood-glucose-regulating roles (true/false)

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Sub-topic 19 2022 · National Preliminary Premium

Hepatic lobules are the structural and functional unit of the liver

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Sub-topic 20 2022 · National Preliminary Premium

Functions of the eustachian tube of the mammalian ear

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Sub-topic 21 2022 · National One-Eighth Premium

Riddle: the mesentery, a mesoderm-derived organ supporting and protecting the intestine

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