pnb 2265 lab 8:transport Exam Questions
and Answers with Verified Solutions | Latest
Updated 2026
microvilli structure for the brush border and contain
enzymes that complete digestion
what do brush border break down disaccharides (sucrose,
enzymes do in regards to lactose, maltose) into monosaccharides
glucose (glucose, fructose, galactose)
what is inside villi lacteal and capillary network
what are the types of active transport: using ATP to transport
membrane transport molecules against their concentration
gradient
-primary: uses energy from ATP directly
-secondary: uses energy from
concentration gradient created by
primary active transport
passive: transporting a molecule down its
concentration gradient using no ATP
(non-polar and lipophilic molecules)
facilitated diffusion: passive transport with
a carrier protein (glucose/amino acids)
, what are the 3 mechanisms for 1- primary active transport via Na/K pump
glucose transport? in the basal membrane
2- secondary active transport by Na/
glucose transporter in apical membrane
3- facilitated diffusion by glucose
transporter in the basal membrane
(kinda in this order)
what does the Na/K pump do? creates a concentration gradient by
moving 3 Na out and 2 K+ in
maintains low intracellular Na (so that it
favors the movement of Na in, and the
Na/glucose transporter can work)
what is another name for the SGLT
Na/glucose transporter? how -it is a symporter and brings in Na down
does it work its concentration gradient, with glucose
what animal and body part do mouse small intestine
we use in lab? how is it it is everted so that the mucosa is on the
prepared? outside and serosa is on the inside
usually glucose goes from the lumen to
the outside, but in this case glucose will
be transported into the sac
what are the different variables putting the intestinal sac in a beaker with
tested in the lab different components
control- 37 C
cold- 4 C
DNP (ATP production inhibitor), 37C
low Na, 37C
and Answers with Verified Solutions | Latest
Updated 2026
microvilli structure for the brush border and contain
enzymes that complete digestion
what do brush border break down disaccharides (sucrose,
enzymes do in regards to lactose, maltose) into monosaccharides
glucose (glucose, fructose, galactose)
what is inside villi lacteal and capillary network
what are the types of active transport: using ATP to transport
membrane transport molecules against their concentration
gradient
-primary: uses energy from ATP directly
-secondary: uses energy from
concentration gradient created by
primary active transport
passive: transporting a molecule down its
concentration gradient using no ATP
(non-polar and lipophilic molecules)
facilitated diffusion: passive transport with
a carrier protein (glucose/amino acids)
, what are the 3 mechanisms for 1- primary active transport via Na/K pump
glucose transport? in the basal membrane
2- secondary active transport by Na/
glucose transporter in apical membrane
3- facilitated diffusion by glucose
transporter in the basal membrane
(kinda in this order)
what does the Na/K pump do? creates a concentration gradient by
moving 3 Na out and 2 K+ in
maintains low intracellular Na (so that it
favors the movement of Na in, and the
Na/glucose transporter can work)
what is another name for the SGLT
Na/glucose transporter? how -it is a symporter and brings in Na down
does it work its concentration gradient, with glucose
what animal and body part do mouse small intestine
we use in lab? how is it it is everted so that the mucosa is on the
prepared? outside and serosa is on the inside
usually glucose goes from the lumen to
the outside, but in this case glucose will
be transported into the sac
what are the different variables putting the intestinal sac in a beaker with
tested in the lab different components
control- 37 C
cold- 4 C
DNP (ATP production inhibitor), 37C
low Na, 37C
