BIOD 121||BIOD 121 Portage Module 2
EXAM QUESTION WITH ANSWERS
VERIFIED (latest update) GRADED
A+!!
Digestion (CORRECT ANSWERS) process of transforming food into
basic nutrients that can be absorbed and used by the body
Without the process, the nutrients we initially consume in food would be
useless: (CORRECT ANSWERS) digestion
Before food even enters the mouth, a cascade of events involving the
nervous system and a variety of hormones are set off based on a variety
of stimulus: (CORRECT ANSWERS) cognition, sound, odor,
appearance, and taste
cognition (CORRECT ANSWERS) thoughts about food can start the
flow of saliva
sound (CORRECT ANSWERS) hearing a description of the meal
odor (CORRECT ANSWERS) smells stimulate a hunger response and
influence its taste
,appearance (CORRECT ANSWERS) seeing the food
taste (CORRECT ANSWERS) begins as the food enters your mouth and
also how it feels
Once food enters the mouth it begins to break down into smaller units in
both (CORRECT ANSWERS) mechanical and chemical processes
Mechanical process begins (CORRECT ANSWERS) in the mouth with
chewing
peristalsis (CORRECT ANSWERS) involuntary muscle contractions are
used to move food mixtures along the tract
Enzymes, acid, bile, and mucus (CORRECT ANSWERS) chemical
means the body has at its disposal to further aid in breaking down food
enzymes (CORRECT ANSWERS) proteins that catalyze (speed up)
chemical reactions. They catalyze the chemical reactions required to
break down food particles into smaller parts, which prepares the
nutrients for absorption
gastrointestinal (GI) tract (CORRECT ANSWERS) a long hollow tube
consisting of several layers of tissue that begins with the mouth and ends
at the anus
, nutrient absorption occurs across the wall of the (CORRECT
ANSWERS) gastrointestinal (GI) tract
mucosa (intestinal wall) (CORRECT ANSWERS) is the inner-most
layer, and it is made of absorption cells and glands
circular and longitudinal muscles (CORRECT ANSWERS) comprise the
outer layers, both of which function to mix and move food along the GI
tract
Circular bands of muscle (CORRECT ANSWERS) most often found
where one part of the tract connects to another, serving as valves to
control the flow of the food particles
3 processes the body can use to move nutrients from the GI tract into the
blood/lymph system and eventually into the cells: (CORRECT
ANSWERS) Passive diffusion, Facilitated diffusion, and Active
transport
Passive diffusion (CORRECT ANSWERS) substances move easily in
and out of cells without the use of energy. Nutrients move from high to
low concentration.
Facilitated Diffusion (CORRECT ANSWERS) no energy is required, but
a special protein carrier is required to help substances cross in or out of
the cell. Nutrients move from high to low concentration.
EXAM QUESTION WITH ANSWERS
VERIFIED (latest update) GRADED
A+!!
Digestion (CORRECT ANSWERS) process of transforming food into
basic nutrients that can be absorbed and used by the body
Without the process, the nutrients we initially consume in food would be
useless: (CORRECT ANSWERS) digestion
Before food even enters the mouth, a cascade of events involving the
nervous system and a variety of hormones are set off based on a variety
of stimulus: (CORRECT ANSWERS) cognition, sound, odor,
appearance, and taste
cognition (CORRECT ANSWERS) thoughts about food can start the
flow of saliva
sound (CORRECT ANSWERS) hearing a description of the meal
odor (CORRECT ANSWERS) smells stimulate a hunger response and
influence its taste
,appearance (CORRECT ANSWERS) seeing the food
taste (CORRECT ANSWERS) begins as the food enters your mouth and
also how it feels
Once food enters the mouth it begins to break down into smaller units in
both (CORRECT ANSWERS) mechanical and chemical processes
Mechanical process begins (CORRECT ANSWERS) in the mouth with
chewing
peristalsis (CORRECT ANSWERS) involuntary muscle contractions are
used to move food mixtures along the tract
Enzymes, acid, bile, and mucus (CORRECT ANSWERS) chemical
means the body has at its disposal to further aid in breaking down food
enzymes (CORRECT ANSWERS) proteins that catalyze (speed up)
chemical reactions. They catalyze the chemical reactions required to
break down food particles into smaller parts, which prepares the
nutrients for absorption
gastrointestinal (GI) tract (CORRECT ANSWERS) a long hollow tube
consisting of several layers of tissue that begins with the mouth and ends
at the anus
, nutrient absorption occurs across the wall of the (CORRECT
ANSWERS) gastrointestinal (GI) tract
mucosa (intestinal wall) (CORRECT ANSWERS) is the inner-most
layer, and it is made of absorption cells and glands
circular and longitudinal muscles (CORRECT ANSWERS) comprise the
outer layers, both of which function to mix and move food along the GI
tract
Circular bands of muscle (CORRECT ANSWERS) most often found
where one part of the tract connects to another, serving as valves to
control the flow of the food particles
3 processes the body can use to move nutrients from the GI tract into the
blood/lymph system and eventually into the cells: (CORRECT
ANSWERS) Passive diffusion, Facilitated diffusion, and Active
transport
Passive diffusion (CORRECT ANSWERS) substances move easily in
and out of cells without the use of energy. Nutrients move from high to
low concentration.
Facilitated Diffusion (CORRECT ANSWERS) no energy is required, but
a special protein carrier is required to help substances cross in or out of
the cell. Nutrients move from high to low concentration.
