Question

Cells are constantly pumping ions in and out to maintain cell volume and pH. Some of these ions include sodium (Na+) and posstasium (K+). These ions are moved against the concentration gradient by the Na+/K+ pump, a Channel protein in the plasma membrane. Which statement explains what will happen when a chemical is added to the cels that prevent ATP from functioning.

A. The na/k pump will work more efficiently
B. The cells will not be able to undergo active transport
C. The Na/K pump will Move to many ions across the membrane
D. The cells will not be able to undergo passive transport

Answer 1

When ATP is inhibited in a cell, the Na+/K+ pump cannot function, halting active transport of ions, which impedes the cell's ability to maintain ion balance and membrane potential. However, passive transport remains unaffected. Option d.

Step-by-step explanation:

When a chemical is added to cells that prevents ATP from functioning, the Na+/K+ ATPase pump will be unable to perform its function. This is because the pump relies on ATP for energy to move ions against their concentration gradient in a process known as active transport. Without ATP, sodium (Na+) and potassium (K+) cannot be pumped across the plasma membrane, and as a result, the cell cannot maintain its necessary ion balance and membrane potential.

Given this information, the correct statement explaining what will happen when ATP is inhibited is that the cells will not be able to undergo active transport option d. This means that the sodium-potassium pump will not move ions across the membrane, leading to a disruption in maintaining the cell's volume, pH, and electrochemical gradients. However, passive transport, which does not require ATP, can still occur if there are other passive channels or carriers present in the membrane.