1Food is Broken Down into Smaller Molecules During Digestion
Large biological molecules are broken down for absorption.
2Why are large molecules broken down in digestion?
They are too large to cross cell membranes.
3What enzymes break down proteins into amino acids?
Endopeptidases and exopeptidases.
4What do digestive enzymes do?
Catalyze breakdown of food molecules.
5What does amylase break down?
Starch into maltose.
6What does membrane-bound disaccharidase do?
Breaks disaccharides into monosaccharides.
7What is absorbed by active transport with sodium ions?
Glucose and galactose.
8How is fructose absorbed?
By facilitated diffusion.
9What do bile salts do?
Emulsify lipids into small droplets.
10What does lipase break down?
Lipids into monoglycerides and fatty acids.
11What helps absorb fatty acids and monoglycerides?
Micelles.
12How are amino acids absorbed?
By co-transport with sodium ions.
13Where are endopeptidases synthesized?
Stomach lining and pancreas.
14What does dipeptidase break down?
Dipeptides into amino acids.