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37 Cards in this Set
- Front
- Back
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Which nutrients do not to be digested |
Minerals, vitamins and water |
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What organ follows the stomach in the digestive system |
Small intestine |
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What is mainly absorbed in the large intestine |
Water |
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Where is most food absorbed |
Small intestine |
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What Is produced when proteins are digested |
Amino acids |
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What does lipase digest |
Fats |
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Where does digestion start |
Mouth |
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Where does digestion finish |
The first part of the small intestine |
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Where is bile produced |
Liver |
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What gives the small intestine a large surface area |
Villi |
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When faeces are passed out of the body this is called..... |
Egestion |
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Name the seven types of substances that make up a balanced diet |
Carbohydrates Roughage (fibre) Minerals Vitamins Fats Proteins Water |
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Malnutrition |
Too little or too much of the seven types of substances that make up a balanced diet |
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Testing foods for protein |
Biuret solution - turns purple if protein is present |
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Testing foods for fat |
Filter paper - if the paper is more transparent, sample contains fat |
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Testing foods for starch |
Iodine solution - blue black colour starch is present |
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Testing foods for glucose (a sugar) |
Benedict's solution - No sugar - blue green Some sugar - yellow Lots of sugar - Orange , brick red |
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What does the visking tube represent |
Skin of the small intestine |
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Water outside the tubing |
Blood |
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The liquid inside the tubing |
The food |
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Why do you think the boiling tube was put into a warm water bath |
To bring it to body temperature |
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What type of digestion is chewing |
Physical |
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What does saliva have |
Enzyme - amylase |
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What does amylase do |
Convert any starch in food into maltose/sugar molecules Chemical digestion |
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After the mouth, what happens to the food next |
Food is forced down the oesaphagus by wave of muscular contraction know as peristalis |
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What happens in the small intestine |
Digested food is absorbed into the bloodstream Must be small soluble nutrients/molecules |
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When the food travels to the large intestine.... what is left of the food |
Water and waste material |
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Where does the undigested waste go to after the large intestine |
Travels to the rectum where it is stored until leaving the body through the anus |
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Enzymes cause ............ |
Chemical digestion |
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Protease |
Proteins break down into amino acids |
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Lipase |
Breaks fats down into fatty acids and glycerol |
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Carbohydrase |
Breaks down carbohydrates into glucose Eg/ amylase breaks down starch into glucose |
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What is bile an example of |
Physical digestion |
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What is the whole point of digestion? |
They can turn the food into small soluble nutrients so they can be absorbed into the bloodstream Guv I us energy to carry on in life |
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Faecus |
Waste that passes out through the anus |
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Enzymes |
Specialised chemicals that speed up reactions They are proteins |
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Name special features of the villi |
Folded up tightly so the have a larger surface area Have thin walls so food can be absorbed easily and efficiently Have a good supply of blood so they can carry the molecules away quickly |
