Question

18. Active transport involves
al Movement of molecules from lower to higher concentration
b) Expenditure of energy
c) It is an uphill task
d) all of the above​

Answer 1

Answer:

d) All of the above

Explanation:

a) because Active transport involves molecules moving against a gradient or other form of resistance, such as from an area of lower to higher charge.

b) because During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

c) because Active transport, also known as uphill transport, requires the transport of molecules from a low-concentration region to a high-concentration region. Therefore, active transport must couple to another spontaneous process to transport charged or uncharged substrates against their thermodynamic forces.