large biological molecules are hydrolysed to smaller molecules that can be absorbed across cell membranes.
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how are carbohydrates digested
1)enter mouth broken up by teeth, 2)salivary amylase catalyses hydrolysis of starch into maltose( breaks glycosidic bonds)
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continue
pancreatic amylase secreted into small intestine and continues to hydrolyse starch to maltose. DISACCHARIDES ENZYMES ARE ATTATCHED TO THE CELL MEMBRANES OF EP CELLS
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contine
maltose is hydrolysed to glucose by maltase enzyme in the membrane of epithelial cells & glucose is absorbed into the blood
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OVERVIEW : where is amylase produced
Salivary glands and pancreas
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product if the reaction catalysed by amylase
starch to maltose
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where is maltase produced
In epithelium cell membranes of small intestines
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what is the product of reaction catalysed by the enzyme maltase
maltose to glucose
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what are triglycerides hydrolysed into
monoglyceride and fatty acids by hydrolysis of ester bonds
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what do bile salts do
emulsify lipids - larger SA for same vol of lipase enzymes to work on
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how are micelles formed
monoglycerides and fatty acids stick to bile salts
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how do micelles help absorption
they break and reform to allow monoglycerides to be released and fatty acids so can be absorbed, they move monoglycerides towards the the epithelium cells in small intestine
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what happens next
absorbed by SI- THEN the SER resynthesises monoglycerides and fatty acids into triglycerides and transports to Golgi body where combines with fatty globules to form CHYLOMICRONS-packed into vesicles&absorbed by lymphatic vessel
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Card 2
Front
how are carbohydrates digested
Back
1)enter mouth broken up by teeth, 2)salivary amylase catalyses hydrolysis of starch into maltose( breaks glycosidic bonds)
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