Question

active transport is any movement of ions or molecules that requires an input of energy. one of the most common examples is when integral proteins move substances across a membrane against their concentration gradient—from an area of lower concentration to an area of higher concentration. active transport is the opposite of passive transport: it is nonspontaneous. it is nonspontaneous because it leads to greater differences in concentration instead of smaller differences in concentration. you can state the same point in terms of entropy. active transport results in a decrease in entropy—meaning an increase in order. the larger differences in concentration that result from active transport result in a system that is more highly arranged. (as youll learn later, active transport often creates larger differences in charge on either side of a membrane, as well as larger differences in concentration.) facilitated diffusion is an example of active transport. true false if this drawing represents a cell and the arrow indicates the direction of movement in \purple ball\ molecules through an integral membrane protein, is the movement across the membrane passive or active or neither? lipid bilayer inside cell outside cell passive active neither—no movement will occur.

Explanation:

Facilitated diffusion is a type of passive transport as it moves substances down their concentration gradient without energy input. In the drawing, the "purple ball" molecules are moving from an area of higher concentration inside the cell to an area of lower concentration outside the cell through an integral membrane protein, which is passive transport.

Answer:

1. B. False
2. A. Passive