Question

cells and body systems online practice
complete this assessment to review what youve learned. it will not count toward your grade.
active and passive transport are important processes that help the cell (1 point)
metabolize materials.
regulate the uptake and removal of materials.
maintain the cellular membrane.
change size and shape.

Explanation:

Active transport moves substances against their concentration gradient (from low to high concentration) using energy (usually ATP). Passive transport moves substances along their concentration gradient (from high to low concentration) without using energy. Both processes are involved in moving substances such as ions, nutrients, and waste products across the cell membrane. So, they help the cell regulate the uptake (bringing in substances) and removal (getting rid of substances) of materials. Metabolism is about chemical reactions in the cell (not directly about transport), maintaining the cellular membrane is more about its structure (lipids, proteins etc., not transport), and changing size and shape is not the main function of these transport mechanisms.

Answer:

regulate the uptake and removal of materials.