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Biology
Why do some hormones (first messenger) need to trigger a ''second messenger to activate a target cell?
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Q. Why do some hormones (first messenger) need to trigger a $''second\, messenger"$ to activate a target cell?
Chemical Coordination and Integration
A
The first messenger needs activation of ATP
100%
B
The first messenger cannot cross a plasma membrane
0%
C
There are no specific cell surface receptors for first messenger
0%
D
The first messenger is not a water-soluble molecule
0%
Solution:
Correct answer is (b) The first messenger cannot cross a plasma membrane