Explain the steps involved in the transport of sodium ions and potassium ions across a plasma membrane using the sodium potassium ATPase.

8. Which of the following is not a feature of voltage-dependent ion channels? A. It has a hydrophobic transmembrane domain B. It is activated by a change in the membrane potential C. It is specific to the ion it lets through D. It is a passive transport E. It can be activated by the binding of a ligand

4. A cell with a selectively permeable membrane is in a solution. Urea can diffuse through the membrane (by passive diffusion in either direction) but ions such as Na*, Cl¯ and K* cannot. Which of the following is correct? Urea Urea K Urea K Inside of cell Naci Urea K K Naci Naci K+ Urea K+ Urea Urea Urea Solution Urea Naci Urea K+ K+ Selectively permeable Urea NaCl Urea NaCl K Urea NaCl K non-penetrating Naci non-penetrating Urea penetrating membrane A. The solution is hypoosmotic and hypotonic relative to the cell, and the net movement of water is towards the cell B. The solution is hyperosmotic and hypotonic relative to the cell, and the net movement of water is towards the cell C. The solution is isoosmotic and isotonic relative to the cell, and the net movement of water is null D. The solution is hypoosmotic and hypertonic relative to the cell, and the net movement of water is towards the solution E. The solution is isoosmotic and hypertonic relative to the cell, and the net…

Model 4: Active Transport Area of detail ion binding site ATP binding site ATP ADP

7. Which of the following membrane transport proteins would you expect to be the most selective (although not the most rapid)? the bicarbonate ion channel the glucose carrier protein the potassium ion channel the chloride ion channel the sodium ion channel

Match the following statement related to membrane transport processes to the appropriate term or terms: passive transport, facilitated transport, active transport. A transporter (or carrier) protein is necessary. (Select all that apply.) passive transport facilitated transport active transport O O

19)Which of the following is most likely to induce osmosis if red blood cells are place in a high concentration of it? H2O     the amino acid glycine     glycerol (CH2OH-CHOH-CH2OH)     butane (CH3CH2CH2CH3)

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6- One of the following is an example about the secondary active transport: a- Glucose/ Na* C- H/k b- Kt/Nat d- None of the above