For the next few questions, use these answer choices: a) Gated channels b) Open
ID: 3511228 • Letter: F
Question
For the next few questions, use these answer choices: a) Gated channels b) Open channels c) Carrier proteins 16) Large molecules, like glucose or amino acids, must always move through the membrane using 17) allow movement of ions down their concentration gradient, but only when a specific 18) These membrane transporters are also called 19) These membrane transporters sometimes utilize ATP 20) Drugs that block the action of will eventually triggering stimulus is present. "pores" or "leak channels". to move ions against their concentration gradient. eliminate the ionic disequilibrium that exists across the membrane of most cells in your body. 21) These membrane transporters are open to either the intracellular fluid or the extracellular fluid at a given time. 22) One kind of these membrane transporters is sensitive to or responds to changes in a cell's membrane potentialExplanation / Answer
1. Carrier protein - eg Sodium Glucose co transporter - the carrier protein binda to both sodium and glucose which facilities transport of glucose also.
2. Gated channel - they require specific signal or molecule to bind in order to open. Eg voltage gated ion channel.
3. Open channel - they are leaky and doesn't require any triggering molecule for it's action. Eg Potassium K+ leaky channel.
4. Carrier protein - they are part of Active Transport system which utilize ATP for transport of molecule.
5. Open channel - as they are leaky so there is constant loss/gain of molecule by cell and this results in ionic disequilibrium.
6. Carrier protein - as they transport molecule from high to low concentration thus they are capable of transporting unidirectional (the carrier protein needs to bind to it's receptor which is then transported along with other molecule)
7. Gated channel - Voltage gated channel - they open when membrane potential reches certain threshold value.,
If you found this answer helpful then please rate it. Comment if you have any problem in understanding this answer.