FNDH 400 Exam 2 Questions with Correct
Answers
Crypts of Lieberkuhn
pits b/w villi
Do crypts contain stem cells true/false
true
Enterocytes a type of cell from the stem cells in crypt mature as you go down more into
the crypts true/false
False enterocytes mature as the resin or migrate up the villus out of the crypt
What happen to enterocytes as they reach the top of the villus
They are sloughed off and either digested as lip and protein contain or excreted in feces
Absorption is defined as reaching the muscle true/false
false reaching the body circulation
Compounds that are taken up might not necessarily be absorbed because the enterocyte
containing the compound might be sloughed off before absorption occurs. true/false
true
At the top of villi are the crypts of Lieberkühn which contain stem cells, many of which
differentiate to become enterocytes as they move down the villi, before ultimately being
sloughed off. true/false
false found in the pits between villi, and the enterocytes move up not down villi
,Which is not a macronutrient digestion product ready for uptake
A. glucose B. tripeptide C. 2-monoglycerides D. fatty acids E. sucrose
E. sucrose
Which is not a protein the thelps move compounds through the phospholipid bilayer cell
membrane A. pump B. carrier C. channel D. transporter E. tunnel
E. tunnel
Active transport does not require energy to move with a concentration gradient
true/false
False passive does active requires energy to move against the concentration gradient
Cleaving a phosphate bond (dephosphorylation) generally releases energy. true/false
true
Osmosis moves solvent instead of solute true/false
true
A solute moving from lower concentration to higher concentration across a membrane
is moving with its concentration gradient. true/false
false moving against its concentration gradient
What are the three forms of passive uptake/transport
simple diffusion, osmosis, facilitated diffusion
n simple diffusion, a solute moves from a region with higher solute concentration across
a membrane to a region with lower solute concentration with the help of a protein
true/false
, false everything is true accept it does not need help from a protein
n osmosis, water moves from a region with higher solute concentration across a
membrane to a region with lower solute concentration. true/false
false low concentration to high concentration
Facilitated diffusion is like simple diffusion except that a carrier or transport protein is
needed to facilitate solute movement across the membrane. true/false
true
Active carrier transport and facilitated diffusion both use a carrier or transport
protein, but active carrier transport uses energy and moves with the concentration
gradient. true/false
false moves against the concentration gradient
A compound that is endocytosed is taken into the cell in vesicles formed from the cell
membrane. true/fals
true
Match each term with the correct thing it is taken up by
A. Monosachcarides B. Glucose/Galactose C. Fructose
1. SGLT1 2. GLUT5 3. enterocyte
A-3 B-1 C-2
GLUT transporters are active carrier transporters, as a result they use energy and
transport solutes against the concentration gradient. true/false
false use facilitated diffusion thus no energy use and with the concentration gradient
Lymph goes into blood via the thoracic duct true/false
Answers
Crypts of Lieberkuhn
pits b/w villi
Do crypts contain stem cells true/false
true
Enterocytes a type of cell from the stem cells in crypt mature as you go down more into
the crypts true/false
False enterocytes mature as the resin or migrate up the villus out of the crypt
What happen to enterocytes as they reach the top of the villus
They are sloughed off and either digested as lip and protein contain or excreted in feces
Absorption is defined as reaching the muscle true/false
false reaching the body circulation
Compounds that are taken up might not necessarily be absorbed because the enterocyte
containing the compound might be sloughed off before absorption occurs. true/false
true
At the top of villi are the crypts of Lieberkühn which contain stem cells, many of which
differentiate to become enterocytes as they move down the villi, before ultimately being
sloughed off. true/false
false found in the pits between villi, and the enterocytes move up not down villi
,Which is not a macronutrient digestion product ready for uptake
A. glucose B. tripeptide C. 2-monoglycerides D. fatty acids E. sucrose
E. sucrose
Which is not a protein the thelps move compounds through the phospholipid bilayer cell
membrane A. pump B. carrier C. channel D. transporter E. tunnel
E. tunnel
Active transport does not require energy to move with a concentration gradient
true/false
False passive does active requires energy to move against the concentration gradient
Cleaving a phosphate bond (dephosphorylation) generally releases energy. true/false
true
Osmosis moves solvent instead of solute true/false
true
A solute moving from lower concentration to higher concentration across a membrane
is moving with its concentration gradient. true/false
false moving against its concentration gradient
What are the three forms of passive uptake/transport
simple diffusion, osmosis, facilitated diffusion
n simple diffusion, a solute moves from a region with higher solute concentration across
a membrane to a region with lower solute concentration with the help of a protein
true/false
, false everything is true accept it does not need help from a protein
n osmosis, water moves from a region with higher solute concentration across a
membrane to a region with lower solute concentration. true/false
false low concentration to high concentration
Facilitated diffusion is like simple diffusion except that a carrier or transport protein is
needed to facilitate solute movement across the membrane. true/false
true
Active carrier transport and facilitated diffusion both use a carrier or transport
protein, but active carrier transport uses energy and moves with the concentration
gradient. true/false
false moves against the concentration gradient
A compound that is endocytosed is taken into the cell in vesicles formed from the cell
membrane. true/fals
true
Match each term with the correct thing it is taken up by
A. Monosachcarides B. Glucose/Galactose C. Fructose
1. SGLT1 2. GLUT5 3. enterocyte
A-3 B-1 C-2
GLUT transporters are active carrier transporters, as a result they use energy and
transport solutes against the concentration gradient. true/false
false use facilitated diffusion thus no energy use and with the concentration gradient
Lymph goes into blood via the thoracic duct true/false
