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AQA B2 Organisation FT (first lesson)
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Gravity
Terms in this set (13)
Enzyme
A biological catalyst, speeds up the rate of a chemical reaction, made of protein
Small intestine
Where nutrients are absorbed into the blood
Mechanical digestion
Chewing in the mouth and churning in the stomach
Chemical digestion
Breakdown of large molecules by enzymes
To convert food into small, soluble molecules that can be absorbed into the blood
Why do we need to digest food?
Stomach acid
Kills pathogens and provides the optimum conditions for protease (pepsin) to work.
pH 1-2
The pH of the stomach
Liver
Where bile is made
The gall bladder
Where bile is stored and released from
Neutralisation of stomach acid
One function of bile when it mixes with stomach acid
A tissue
A group of similar cells working together to perform a function
An organ
A group of different tissues working together to perform a function
An organ system
A group of different organs working together to perform a function
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