What explanation can you give for why the sodium-potassium pump does not run out of ions to move in or out of the cell?
A. The cell continuously produces more ions to replace those moved by the pump, maintaining a constant supply.
B. Leak channels are always open, allowing the passage of sodium ions (Na+) and potassium ions (K+) across the membrane.
C. Many of the ions moved in or out then diffuse passively back through the membrane in the opposite direction.
Answer: B
You might also like to view...
Why is the term “conidial fungi” confusing?
What will be an ideal response?
The first organisms used in recombinant DNA technology were ___________
A. fungi D. cows B. bacteria E. humans C. sheep
What age group on a population pyramid would you examine to predict the population in 25 years?
A. 10-15 B. 25-30 C. 20-25 D. 0-5
Which of the following is acquired when amoebas are forced into human nasal passages during swimming?
A. Entamoeba histolytica B. Toxoplasma gondii C. Naegleria fowleri D. Balantidium coli E. Giardia lamblia