An ion pump:
A. requires hydrolysis of ATP to move ions
B. does not require energy to move ions
C. exchanges ions with the same charge
D. exchanges ions with opposite charge
E. A and C
An ion channel:
A. requires hydrolysis of ATP to move ions
B. does not require energy to move ions
C. exchanges ions with the same charge
D. exchanges ions with opposite charge
E. A and C
I know a pump exchanges ions and I'm pretty sure that they exchange the same charge. This is in concerns with a H+ and a Na+ biological pump; but I'm not sure if it requires ATP. I don't know if a ion channel is like that of a ion pump or not at all alike.
Thank you for you help,
Aletha
An ion pump moves ions against their concentration gradient, requiring energy input in the form of ATP hydrolysis. Therefore, the correct answer to the first question is A.
On the other hand, an ion channel facilitates the movement of ions down their concentration gradient and does not require the hydrolysis of ATP. Therefore, the correct answer to the second question is B.
Regarding the charge of the ions being exchanged, both ion pumps and ion channels can act on ions with the same charge or opposite charge, depending on their specific function. However, it is important to note that ion pumps are responsible for active transport, which often involves the exchange of ions with opposite charge. So, the correct answers for the charge of ions being exchanged are E (for ion pumps) and C (for ion channels).
In summary:
An ion pump requires hydrolysis of ATP to move ions (A) and exchanges ions with the same charge (E).
An ion channel does not require energy to move ions (B) and exchanges ions with the same charge (C).