Organisation Flashcards
learn and revise
cells
Building blocks of all life
Tissue
group of cells with similar structure and function
Organ
group of tissues working together
Digestive system
an organ system that breaks down food to be absorbed by the body
mouth
mechanical breaking down of the food [chewing]
Oesophagus
where food passes to the stomach
Stomach
Where digestive enzymes are added and churns the food
Liver
produces biles and enzymes
small and large intestines
large removes water and small absorbs the nutrients in the food
enzymes
Biological catalyst that speeds up a chemical reaction without being used up
Carbohydrates
broken down by carbohydrates into simple sugars
starch test
iodine [goes from orange to black]
sugar test
heating with benedicts solution[ blue to red]
protein
broken down by protease into amino acids
protein test
tested by buirets solution[blue to purple]
fats
broken down by lipase into glycerol and fatty acids
fat tests
ethanol gets a cloudy layer
plasma
makes up 55% of blood and transports C02 and waste
Red blood cells
carries oxygen and has a large surface area[ full of haemoglobin]
White blood cells
Produce antibodies antitoxins and engulf pathogens
Breathing
Mechanical action of inhaling air into our lungs
Alveoli
high surface area, thin walls.
