Signals Si prez

These flashcards cover the types of signals in biological systems and their corresponding definitions.

autocrine signals

C. act on the same cell that secretes them

paracrine signals

G. diffuse locally and act on nearby cells

endocrine signals

H. hormones carried between cells by blood or other body fluids

neural signals

D. diffuse a short distance between neurons

neuroendocrine signal

B. hormones released from neurons

___ GTP

A. activates the G protein

___ GDP

E. deactivates the G protein

lipid insoluble signals

I. bind to receptors on the cell's surface

___ lipid soluble signals

F. bind to intracellular receptors