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Cell Signalling and Transduction - Medical Science

Q1:

Cell signaling can be classified into

A three distinct types based on the distance over which the signaling molecules act

B two distinct types based on the distance over which the signaling molecules act

C three distinct types based on the signaling molecules

D none of the above

ANS:A - three distinct types based on the distance over which the signaling molecules act

Autocrine: Acts on own cell.

Paracrine: Acts on nearby cell (mostly of different type cell which secrets it).

Endocrine: Which acts on distance cell by circulation (Hormone).