Question

active transport - protein pumps
where do cells get the required energy for active transport?
amino acids
phospholipids
atp

Explanation:

Active transport in cells requires energy. ATP (adenosine triphosphate) is the primary energy currency of the cell, used to power processes like active transport. Amino acids are building blocks of proteins, and phospholipids are part of cell membranes, neither of which directly provide energy for active transport.

Answer:

C. ATP (assuming the options are labeled as A. amino acids, B. phospholipids, C. ATP; if the third option is "ATP" as per the visible text, the correct answer is the option with "ATP", e.g., if the third option is C. ATP, then C. ATP)