Systemin can correctly be described as a(n)

A. peptide.
B. carbohydrate.
C. receptor.
D. leaf lipid.
E. apoplast.


Answer: A

Biology & Microbiology

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Based on the figure above, which of these experimental treatments would increase the rate of sucrose transport into the cell?

A) decreasing extracellular sucrose concentration B) decreasing extracellular pH C) decreasing cytoplasmic pH D) adding an inhibitor that blocks the regeneration of ATP E) adding a substance that makes the membrane more permeable to hydrogen ions

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The interaction between two species usually influences all individuals within the respective populations equally

Indicate whether the statement is true or false

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A pseudopod is considered:

A. Contractile vacuole B. False Feet C. Flagella D. Protist

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Speciation that occurs in bird populations that nest on either side of a river could be an example of ________speciation.

A. divergent B. parapatric C. allopatric D. convergent E. sympatric

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