996 past contests
Topic 23 · Flower petals act as landing platforms for pollinators
Topic 34 · Pits in tracheid walls connect adjacent cells, enabling water conduction
Topic 36 · Blood passes into the right ventricle after crossing the tricuspid valve
Topic 52 · Glucose represses transcription of cellulase genes as a metabolic regulation strategy
Topic 34 · Roots obtain food via translocation from the plant's photosynthetic parts
Topic 52 · The hereditary material in viruses is nucleic acid (dna or rna)
Topic 13 · The extremities are the coldest parts of the human body due to reduced blood flow there
Topic 18 · The biuret test gives a purple color to indicate the presence of protein
Topic 47 · The cochlea is the inner-ear structure responsible for hearing
Topic 41 · Epiphytes in the rainforest compete for light
Topic 51 · Mitosis preserves the chromosome number (46) across successive divisions
Topic 36 · Blood from the jejunum and ileum drains via the hepatic portal vein
Topic 49 · Sweat must evaporate from the skin to produce a cooling effect
Topic 36 · Left ventricle has the thickest wall, pumping blood to the whole body
Topic 53 · Abo blood grouping is derived from three alleles (ia, ib, i)
Topic 45 · Nastic movements are non-directional responses, unlike directional tropic movements
Topic 18 · Essential elements (k+, na+, cl-) affecting cellular osmotic potential (true/false)
Topic 18 · Essential elements as structural components of biomolecules (true/false)
Topic 18 · Essential elements in energy-related compounds (atp phosphorus, chlorophyll magnesium) (true/false)
Topic 38 · Riddle: evapotranspiration, the combined water loss from land/ocean to atmosphere