 
			 
			MCQOPTIONS
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				| 1. | 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 | 
| Answer» B. two distinct types based on the distance over which the signaling molecules act | |