996 past contests
Topic 3 · Protein-digesting enzymes do not act on starch to give amino acids (true/false)
Topic 3 · Protein-digesting enzyme has no action on starch, due to substrate specificity (true/false)
Topic 3 · Protein-digesting enzymes do not act on starch (true/false)
Topic 23 · Pollination can occur without fertilization taking place (true/false)
Topic 23 · Pollination and fertilization need not be simultaneous (true/false)
Topic 38 · Problem of the day: labelling components of the water cycle diagram
Topic 23 · Fertilization in flowering plants requires prior pollination (true/false)
Topic 46 · The reflex arc as the simplest nervous pathway
Topic 43 · Turbidity as the abiotic factor controlling light penetration depth in water
Topic 34 · Root hairs as the main structure for water absorption
Topic 30 · The swim bladder preventing bony fish from sinking
Topic 5 · Gill filaments as the site of gaseous exchange in bony fish gills
Topic 3 · Gill rakers straining food particles from water in bony fish
Topic 34 · The vascular cambium separating xylem and phloem in dicot stems
Topic 35 · Active transport: movement of solutes against a concentration gradient
Topic 5 · Leaves as the primary site of photosynthesis
Topic 29 · Riddle: phylum echinodermata and its water vascular system
Topic 35 · Gas exchange in leaves is diffusion, not osmosis (true/false)
Topic 35 · Detecting perfume at a distance is diffusion (true/false)
Topic 35 · Spreading aroma is diffusion, not osmosis (true/false)