SFSU ID 2. Under physiological conditions, the Na-K pump transports sodium and p

Question

SFSU ID 2. Under physiological conditions, the Na-K pump transports sodium and potassium across the membrane through the hydrolysis of ATP. This occurs in a sequence of steps. A. (5pts) Beginning with the START step, put the other steps a-e (currently listed in randorm order) of the Na-K pump's mechanism in order to complete a full cycle of transport. START - The protein is phosphorylated open to the extracellular side, and contains 2 K ions. a. ATP hydrolysis, protein phosphorylation, and ADP release open the protein to the extracellular side. 4 b. The protein binds ATP which opens the protein to the cytoplasmic side.(2 c. The protein closes & dephosphorylates. O d. 3 Na+ exit into the extracellular space, and 2 K+ enter into the protein e. 2 K* exit into the cytoplasm, 3 Na* enter into the protein, and the protein closes () Order of steps:START-CBE A B. (3pts) Describe a condition in which the cycle would proceed in the reverse order .lwillva tie na'le+law?lnorder-t create ATP, wnicn will reverse ++e. Na K+ transpo 3. You've synthesized different sets of lipid vesicles, which are small, spherical phospholipid-

Explanation / Answer

2 B. The condition in which the cycle will proceed in reverse is when the concentration of potassium is increased inside the cells and the concentration of sodium is much lower inside the cell to maintain the resting potential. This process will happen in the expense of ATP as well.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.