exam revision science Flashcards
to complete this to feel confidence in the exam
multi-cellular organisms
an organism composed of many cells to perform an action and often become dependent on each cell
absorbed
absorbed: taken in
alchemist
alchemist: olden-day ‘chemist’ who mixed chemicals and tried to change ordinary metals into gold. Alchemists also tried to tell the future.
alimentary canal
alimentary canal: passage from the mouth to the anus. Digestion of food occurs as it moves through the canal.
alloy
alloy: a mixture of a metal with a non-metal or another metal
alveoli
alveoli: tiny air sacs in the lungs at the ends of the narrowest tubes. Oxygen moves from alveoli into the surrounding blood vessels, in exchange for carbon dioxide.
ammonia
ammonia: a nitrogenous waste product of protein break down
amylase
amylase: an enzyme in saliva that breaks starch down into sugar
Animalia
Animalia: the kingdom of organisms that have cells with a membrane around the nucleus, but no cell wall, large vacuole or chloroplasts
antibiotic
antibiotic: substance derived from a micro-organism and used to kill bacteria in the body
antiseptic
antiseptic: mild disinfectant used on body tissue to kill microbes
anus
anus: the final part of the digestive system, through which feces are passed as waste.
aorta
aorta: a large artery through which oxygenated blood is pumped at high pressure from the left ventricle of the heart to the body
arteries
arteries: hollow tubes (vessels) with thick walls carrying blood pumped from the heart to other body parts
arterioles
arterioles: vessels that transport oxygenated blood from the arteries to the capillaries
