1. Why is there a need for bile salts to work first before the lipids can be bro
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Question
1. Why is there a need for bile salts to work first before the lipids can be broken down by enzymes? (3 points) 2. Fill in the blanks: A. Which organ in the body produces enzymes that are used in the small intestine? (1 point) B, In which organ do we see chemical digestion of lipids? (1 point) C. Which biological molecule starts to get digested in the mouth (1 point. D. Goblet cells produce (1 point) . E. Name the organ with a highly acidic intemal environment (1 point 3. On each arrow, write the name of the enzyme that is needed to speed up each of these reactions: (7 points) A. Polypeptides+ water B. Maltose+ water C. Starch in mouth + water D. Starch in small intestine + water E. Proteins in stomach +water F. Proteins in small intestine+water G. Lipid droplets+water amino acids glucose maltose maltose peptides peptides fatty acids + glycerolExplanation / Answer
1) lipids are hydrophobic and poorly soluble in aquous environment of digestive tract. For the digestion of lipid , these are form aggregates called fat globule . Lipase is water soluble enzyme that act on the surface of this fat globule. Bile salt are amphiphatic molecule that promote emulsification process where large fat globule breakdown in smaller and coated with bile salt. This prevent emulsion droplet from reassociating and lipase act on this droplet and cause digestion of lipid.
2) E) Digestive system organ stomach has highly acidic environment because presence of HCl.
D) Globet cell secrete mucus which protect the mucus environment.
A) Pancreas is a organ that produce enzyme used in intestine. Enxymes are lipase, amylase, trypsin , chemotrypsin etc. Gall bladder also secrete bile juice but it doesnt contain an enzyme.
C) Chemical digestion of lipid occur by linguil lipase present in salivary amylase. Means chemical digestion of lipid occur in mouth.
B) Digestion of carbohydrate start in mouth. Salivary amylase enzyme help in digestion of starch in maltose.
3) C) Starch in mouth + water ----------------maltose
Salivary amylase enzyme
D) starch in small intestine + water ---------maltose
Pancreatic amylase enzyme
B) Maltose + water -_---------- glucose
Maltase enzyme
G) lipid droplet + water ----------- fatty acid + glycerol
Pancreatic lipase
A) polypeptide + water ------------- amino acid
Aminopeptidase
E) protein in stomach + water -------- peptide
Pepsin
F) protein in small intestine + water ------- peptide
Chemotrypsin, trypsin
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