Social Studies
Social Studies, 31.12.2019 02:31, jay9251

How does protein in a peanut butter sandwich become protein that your body can use? think about the digestive and absorptive process beginning with the first bite of that sandwich, until the amino acids enter the circulatory system. focus your attention on the steps involved in protein digestion illustrated in the focus figure.

rank in the correct order from the first bite to the amino acids entering the circulatory system.

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enzymes from
the pancreas
are secreted
into the small
intestine.

a bolus enters
the stomach.

chyme travels
from the stomach
to the small intestine.

pepsin breaks
down proteins
into polypeptide
strands.

hydrochloric
acid denatures
proteins and
activates pepsinogen
to form pepsin.

enzymes in the
small intestine
break down
polypeptide
strands
into mostly
tripeptides and
dipeptides.

tripeptides and
dipeptides are
broken down
into single
amino acids that
enter the blood
and travel to the liver.

mechanical
digestion
in the mouth
breaks down
the food.

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