What is the probable role of salicylic acid in the defense responses of plants?

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#Question id: 12956

#10. Ecological Principles

For  nearly 200  years, biogeographers have  noted that  the  tropics  have  more terrestrial species than  temperate regions. Which of the following is NOT a plausible explanation for this pattern?

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#Question id: 11452

#7. System Physiology – Animal

A given photon of light may trigger an action potential with thousands of times more energy because the signal strength is amplified by ________.

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#Question id: 758

#1. Molecules and their Interaction Relevant to Biology

Both miRNAs and one strand of siRNAs are bound by proteins to form a ribonucleoprotein complex called:

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#Question id: 4160

#3. Fundamental Processes

Different tRNA molecules that bind the same amino acid are called __ tRNA molecules.

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#Question id: 2068

#2. Cellular Organization

Which of the following molecules dramatically increases the rate of diffusion of water across cell membranes?