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17 Cards in this Set
- Front
- Back
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What happens when food enters the mouth? |
Saliva is produced by salivary glands and is mixed with the food through chewing |
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What does saliva contain? |
Mineral salts and amylase |
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What do the mineral salts do? |
They help maintain the optimum pH for the amylase enzyme. |
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What does amylase do? |
It hydrolyses alternate glycosidic bonds in starch to produce the disaccharide maltose |
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What then happens to the food after this? |
It's swallowed and enters the stomach where acid is released |
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What does the stomach acid do? |
It denatures the amylase enzyme and prevents further hydrolysis of starch. |
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What happens to the food after the stomach? |
It enters the small intestine and mixes with pancreatic secretions. |
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What are pancreatic secretions also known as and what does it contain? |
Pancreatic juice It contains pancreatic amylase |
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What does the pancreatic amylase do?
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It continues the hydrolysis of any remaining starch into maltose. |
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Where are alkaline salts found? |
In bile and released by the walls of the small intestine
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What do alkaline salts do? |
They help to neutralise the acidic contents from the stomach and maintain a neutral pH for the amylase enzyme in the small intestine |
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What pushes food along the small intestine? |
Peristalsis |
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What does food encounter as it passes through the small intestine? |
3 membrane bound disaccharidase enzymes. Maltase, sucrase and latase |
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What can they each do? |
Hydrolyse single glycosidic bonds to produce monosaccharides. |
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What does maltase do? |
Hydrolyses maltose into glucose |
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What does sucrase do? |
Hydrolyses sucrose into glucose and fructose |
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What does lactase do? |
Hydrolyses lactose into glucose and galactose |
