AP Biology Unit 4 Review

A chemical signal that activates some cellular response

A type of signaling where cells make physical contact to transmit signals and initiate cell responses

Signals are released by a cell and diffuse a short distance to reach nearby target cells.

A type of signalling where a cell secretes a signal that then binds to receptors on its own cell surface.

A type of signalling that uses hormones that travel long distances in the bloodstream

Tags

NGSS.HS-LS1-3

When animal cell membranes fuse together and open pores between each other for quick diffusion of signals into other cells.

Pores between the cell membrane and cell wall of two plant cells

A receptor on the outer surface of the membrane that accepts hydrophilic ligands that cannot cross through the cell membrane

A type of receptor that accepts lipid soluble ligands inside the cell that can pass through the cell membrane, and these receptors can bypass the cell transduction pathway.

For a ligands to activate a membrane bound receptor, there must be a...