You’ve just placed a peanut butter cup (containing lipid, carbohydrates, and protein) into your m…
You’ve just placed a peanut butter cup (containing lipid,
carbohydrates, and protein) into your mouth and are mentally
preparing yourself for the process of digestion. Draw a diagram
tracing the peanut butter cup as it moves through your body. Using
the given list of enzymes label where in the body they act and
which macronutrients they act on. You may need to use resources
other than your lab manual to complete this activity.
Lipase (Used twice)
The digestion process is a series of reactions of food with the
digestive hormones and juices. This starts right from the oral
cavity. It is an important process that breaks down the proteins,
fats, carbohydrates, vitamins, minerals into simpler forms so that
it can be absorbed easily into the body cells.
Amylase: Amylase is a protein made by pancreas
and by glands in mouth and throat. It helps in break down
carbohydrates and starches into sugar.
Dipeptidase: Dipeptidases hydrolyze amino acids
and are secreted by the brush border of the villi in the small
Bile: It contains bile acids, which are
critical for digestion and absorption of fats and fat-soluble
vitamins in the small intestine.
Lipase: It is an enzyme that breaks down
dietary fats into smaller molecules called fatty acids and
glycerol. This enzyme specifically digests butter fat. The main
source of lipase is pancreas which produces pancreatic lipase that
acts in your small intestine.
Pepsin: It is an endopeptidase that breaks down
proteins into smaller peptides. It is secreted by glands of stomuch
and catalyzes the partial hydrolysis of proteins.
Trypsin: It catalyzes the proteins into smaller
peptides. It acts in deodenum. Tryptic digestion is a necessary
step in protein absorption.
Sucrase: It is a digestive enzyme secreted in
the small intestine and are located on the brush border of the
small intestine. It breaks down the sucrose into fructose and