1Which part of the skeleton protects the heart and lungs?
AThe skullBThe kneecapCThe rib cageDThe pelvis
2What is the main job of red blood cells?
ACarry dissolved nutrients, hormones and wasteBHelp the blood to clot at a cutCFight germs and infectionsDCarry oxygen around the body
3What is the main job of the liver?
AMake bile and break down harmful substancesBFilter the blood and make urineCMix food with acid and enzymes to start digesting proteinsDAbsorb digested food into the blood
4What is the main job of the lungs?
AFilter the blood and make urineBMix food with acid and enzymes to start digesting proteinsCPump blood around the bodyDTake in oxygen and get rid of carbon dioxide
5Which organs filter the blood and make urine?
ASmall intestineBKidneysCLungsDStomach
6What is the main job of platelets?
ACarry dissolved nutrients, hormones and wasteBHelp the blood to clot at a cutCCarry oxygen around the bodyDFight germs and infections
7Which organ uses acid and enzymes to start digesting proteins?
ALungsBKidneysCStomachDLiver
8What is the main job of plasma?
ACarry oxygen around the bodyBCarry dissolved nutrients, hormones and wasteCFight germs and infectionsDHelp the blood to clot at a cut
9What carries messages between the brain and the rest of the body?
ATendonsBArteriesCNervesDBones
10What is the main job of white blood cells?
AFight germs and infectionsBHelp the blood to clot at a cutCCarry dissolved nutrients, hormones and wasteDCarry oxygen around the body