996 past contests
Topic 5 · Ethanol as the end product of yeast fermentation
Topic 7 · Stomata as openings between paired guard cells
Topic 7 · Cell types making up cortical (ground) tissue in plants
Topic 34 · Xylem as the principal water-conducting tissue in plants
Topic 3 · The pyloric sphincter and regulation of gastric emptying
Topic 7 · Fibres and sclereids as sclerenchyma cell types
Topic 34 · Sieve tube elements as the conducting cells of phloem
Topic 34 · Location of xylem and phloem within the leaf (midrib)
Topic 51 · Riddle: genetics, a young science built on meiosis and mitosis
Topic 18 · Enzymes are specific to particular substrates/reactions
Topic 23 · Actinomorphic flowers have radial, not bilateral, symmetry
Topic 27 · Poliomyelitis and measles are caused by viruses, not bacteria
Topic 27 · Relative sizes of bacteria and viruses
Topic 22 · The diastema: gap between incisors and cheek teeth in herbivores
Topic 14 · Open-rooted, continuously growing incisors in rabbits
Topic 22 · The cornified layer of mammalian skin
Topic 22 · Renal pyramids in the kidney
Topic 41 · Mycorrhizal symbiosis between fungi and plant roots
Topic 41 · Lichen as a symbiosis of fungi and algae or cyanobacteria
Topic 34 · The cork cambium (phellogen) and secondary growth