Question

students examine an image of cellular transport in their biology classroom. how do they determine that this image represents active transport?

Explanation:

Active transport moves substances against their concentration gradient, from an area of lower concentration to an area of higher concentration, and requires energy. In the image, the purple and green molecules are moving from an area of lower concentration outside the cell to an area of higher concentration inside the cell, likely with the help of transport proteins and energy input.

Answer:

The molecules are moving against the concentration gradient (from lower to higher concentration) which is characteristic of active transport.