Module 2: BIOD 121 (Portage) (2025)
comprehensive questions and verified answers (
detailed & elaborated) ACTUAL EXAM 2025
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process of transforming food into basic nutrients
Digestion
that can be absorbed and used by the body
Without the process, the digestion
nutrients we initially
consume in food would
be useless:
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, 2/15/25, 7:22 PM Module 2: BIOD 121 (Portage) (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM …
Before food even enters cognition, sound, odor, appearance, and taste
the mouth, a cascade of
events involving the
nervous system and a
variety of hormones are
set off based on a variety
of stimulus:
cognition thoughts about food can start the flow of saliva
sound hearing a description of the meal
smells stimulate a hunger response and influence its
odor
taste
appearance seeing the food
begins as the food enters your mouth and also how
taste
it feels
Once food enters the mechanical and chemical processes
mouth it begins to break
down into smaller units in
both
Mechanical process in the mouth with chewing
begins
involuntary muscle contractions are used to move
peristalsis
food mixtures along the tract
Enzymes, acid, bile, and chemical means the body has at its disposal to
mucus further aid in breaking down food
proteins that catalyze (speed up) chemical
reactions. They catalyze the chemical reactions
enzymes
required to break down food particles into smaller
parts, which prepares the nutrients for absorption
a long hollow tube consisting of several layers of
gastrointestinal (GI) tract tissue that begins with the mouth and ends at the
anus
nutrient absorption gastrointestinal (GI) tract
occurs across the wall of
the
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