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BIOLOGICAL MOLECULES + DIGESTION
Balanced Diet:


Digestive
System:




Process Definitions:
INGESTION food taken in, broken down, mixed with saliva
then swallowed
DIGESTION breakdown of large insoluble molecules into small
soluble molecules using enzymes
ABSORPTION small soluble molecules moving into the
bloodstream
ASSIMILATION cells using nutrients for growth, repair and
energy…

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Carbohydrates contain:
Carbon
Hydrogen
Oxygen



Maltose




Proteins contain:
Carbon
Hydrogen
Oxygen
Nitrogen




Lipids contain:
Carbon
Hydrogen
Oxygen


Enzyme Diagram:
Food Tests:


TEST FOR STARCH:
Iodine Solution
Red Black
TEST FOR GLUCOSE:

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Benedict Solution
Blue Red




Bile:




USES OF BILE:
1. Emulsifies fats giving them a
large surface area.
2. Neutralises stomach acid
Bile is STORED in the gall bladder
Bile is MADE in the liver




Villi:

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More Enzymes:


BIOLOGICAL CATALYSTS speed up reactions in living things


Once the enzymes have got too hot, they begin to denature.




Different enzymes work best at different pH levels. Extremes of pH can also
denature enzymes.

Comments

frank james

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great notes

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