4. List 4 examples of transporters and complete the table Fill in all of these b

Question

4. List 4 examples of transporters and complete the table Fill in all of these boxes "'yes Name of transporter (specific name, not class of transporters) Uses energy (ie. ATP Relies only on gradientCo of transported substance substance relying on gradient of another to transport 5. Which type of transporter is responsible for the following processes: Transport process in the organism Transporter acidification of lysosomes when they digest their "catch Absorption of glucose in the intestine Absorption of glucose in the liver

Explanation / Answer

ans no -5  

transporter process in the organism

acidificatoin of lysosymes when they digest their catch

this is done by the acid present in the lysosymes and its ph differential is mainted by pumping in protons H+ ionsfrom cytocol to ross the membrane via proton pumps and chloride ion channels . Vacuolar H+-ATPasesare responsible for transport of protons, while the counter transport of chloride ions is performed by ClC-7 Cl/H+ antiporter.

Glucose is absorbed by sodium glucose co-transport mechanism.

it has two stages:- first -sodium ion from inside the cells are transported to interstitial fluid. This leads to low sodium concentration inside the cell.

second- As a result of low sodium inside the cells, sodium ions are transported from intestinal lumen by facilitated diffusion (diffusion with the help of transport protein). The transport protein that helps in this case, has a peculiarity. It transports sodium ion with glucose. Actually this protein drags glucose along with sodium ion from the lumen into the cell.Once into the cell, other transport proteins and enzymes cause facilitated diffusion of glucose through basal and lateral membranes of the cell into interstitial fluid and from there into the blood.

transporter process in the organism

transporter

acidificatoin of lysosymes when they digest their catch

this is done by the acid present in the lysosymes and its ph differential is mainted by pumping in protons H+ ionsfrom cytocol to ross the membrane via proton pumps and chloride ion channels . Vacuolar H+-ATPasesare responsible for transport of protons, while the counter transport of chloride ions is performed by ClC-7 Cl/H+ antiporter.

absorption of glucose in intestine

Glucose is absorbed by sodium glucose co-transport mechanism.

it has two stages:- first -sodium ion from inside the cells are transported to interstitial fluid. This leads to low sodium concentration inside the cell.

second- As a result of low sodium inside the cells, sodium ions are transported from intestinal lumen by facilitated diffusion (diffusion with the help of transport protein). The transport protein that helps in this case, has a peculiarity. It transports sodium ion with glucose. Actually this protein drags glucose along with sodium ion from the lumen into the cell.Once into the cell, other transport proteins and enzymes cause facilitated diffusion of glucose through basal and lateral membranes of the cell into interstitial fluid and from there into the blood.

absorption of glucose in the liver Glucose at low concentrations is transported through the mucosal lining into the epithelial cells of the intestine by active transport, via a sodium dependant transporter. At higher concentrations, a second facilitative transporter becomes involved. From the epithelial cells glucose is moved into the surrounding capillaries by facilitated diffusion.

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