Many scientists use chemical inhibitors to interfere with normal signaling pathways within eukaryotic cells. If such inhibitors are large, nonpolar molecules, what is the likely method of action of these chemical inhibitors

Explanation:

Chemical inhibitors that interfere with signalling pathways or blocks signals from one cell to another is known as signal pathways inhibitors. If the signalling pathway inhibitors are non polar and large, first of all they will not easily cross the cell membrane. These chemical inhibitors will then bind to receptors and inhibits the signal transduction. No only this, they will interfere with receptor activation also.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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