AP BIOLOGY

Detailed explanation-1: -So the right answer for this question is option B passive transport.

Detailed explanation-2: -Summary. Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane. Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated diffusion.

Detailed explanation-3: -It is possible for large molecules to enter a cell by a process called endocytosis, where a small piece of the cell membrane wraps around the particle and is brought into the cell. If the particle is solid, endocytosis is also called phagocytosis.

Detailed explanation-4: -Channel proteins carry out the majority of facilitated diffusion. While the chemicals are still moving in the direction of their concentration (from high to low), they are given a passageway through the cell membrane. This allows them to move at near diffusion speeds.

Detailed explanation-5: -Passive transport occurs when substances cross the plasma membrane without any input of energy from the cell. No energy is needed because the substances are moving from an area where they have a higher concentration to an area where they have a lower concentration.