In systemic acquired resistance, the regulatory protein NPR-1 moves from the cytoplasm to the cell

nucleus, apparently in response to a buildup of ____ in the cytoplasm.



a. ethylene
b. brassinosteroids
c. oligosaccharins
d. jasmonates
e. salicylic acid


E

Biology & Microbiology

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The lac operator site within the lac operon is an example of which of the following?

A. cis-acting element B. para-acting element C. trans-acting element D. inter-acting element E. contra-acting element

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Logging is a ________ sector activity

A) primary B) secondary C) tertiary D) quaternary

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In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron

transport chain to ____.

a. NAD+

b. NADH c. photosystem I d. oxygen e. water

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Spores are produced in the ________ of a fern.

a) archegonia b) sporangium c) ovary d) antheridia e) ovule

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