Sub-topic 1
2021 · National Preliminary
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Molecules and ions required for muscle contraction
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Sub-topic 2
2024 · National One-Eighth
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Organ systems and their primary regulatory/defensive/transport functions
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Sub-topic 3
2024 · National One-Eighth
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Functions of smooth muscle in the body (true/false)
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Sub-topic 4
2024 · National One-Eighth
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Non-sensory roles of insect cerci
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Sub-topic 5
2026 · National One-Eighth
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Labeling the structures of a transverse section of the human eyeball (comprehensive diagram)
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Sub-topic 6
2025 · National Preliminary
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Keratin-containing structures in animals: skin, hair, feathers, horns, hooves, claws, beaks
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Sub-topic 7
2023 · National Preliminary
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Honeybee mouthparts used in molding beeswax
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Sub-topic 8
2003 · National Semifinal
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Pheromones: chemical signals for mate attraction and territory marking
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Sub-topic 9
2013 · National Preliminary
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Trail pheromones used by ants for colony navigation
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Sub-topic 10
2013 · National Preliminary
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Insect eyes sensitive to shorter wavelengths (uv) than human vision (true/false)
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Sub-topic 11
2013 · National Preliminary
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Bees are not blind to violet light (true/false)
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Sub-topic 12
2013 · National Preliminary
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Bees are blind to red light (true/false)
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Sub-topic 13
2013 · National Semifinal
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Plants exhibit developmental responses to environmental cues (true/false)
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Sub-topic 14
2021 · National Preliminary
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The extremities are the coldest parts of the human body due to reduced blood flow there
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Sub-topic 15
2022 · National Preliminary
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Physiological processes in plants affected by light
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