Which of the following is a TRUE mechanism for solute transport across the plasm

Question

Which of the following is a TRUE mechanism for solute transport across the plasma membrane? Glucose permeates directly through the plasma membrane via Fick's Law Carrier proteins are required to transport ethanol across the plasma membrane All solutes pass through the plasma membrane to equilibrium so that the ECF and ICF have the same composition Ions penetrate the plasma membrane and passively diffuse across it ECF tonicity above or below the osmolality set point causes water movement across the plasma membrane

Explanation / Answer

Answer: "option- c"-all solutes pass through plasma membrane to equilibrium SO that the ECG and ICT have the same composition.

Explanation: -

*glucose is transported by active transport.

*ethanol enter cell pass directly through the membrane by the process of diffusion. Ethanol can move through the water channels or pores that are created by proteins embedded in the cell membrane.

*hydrophobic molecules and small polar molecules can diffusethrough the lipid layer, but ions and large polar molecules cannot. Integral membrane proteins enable ions and large polar molecules to pass through the membrane by passive or active transport.

*ECF and ICF donot have same composition,thus to bring about equilibrium solutes pass through plasma membrane.

*Water can cross cell membranes readily so: Intracellular tonicity must always equal ECF tonicity.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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