. if I want to prevent fruit from over-ripening and rotting while still in the f
ID: 257741 • Letter: #
Question
. if I want to prevent fruit from over-ripening and rotting while still in the field or during transport to market, which of the following genes / enzymes would I want to inhibit?
Isopententyl transferase
GA-20 Oxidase
yellow cameleon
ACC oxidase
brassinolide oxidase 1
3. Applying auxin exogenously to a plant may have limited effects because
A auxin may form inactive conjugates with other molecules
B auxin may be rapidly degraded to an inactive state
C auxin may partition quickly to cellular compartments where it is not active
D All of the above
E. B and C
Explanation / Answer
ACC oxidase catalyzes the last step of ethylene biosynthesis. Ethylene is the plant hormone involved in ripening. Therefore, inhibition of ACC oxidase would prevent ripening.
Isopentenyl transferase helps in the growth and tolerance.
GA-20 oxidase regulates stem length and tuber yield.
Brassinolide oxidase regulates brassinosteroid synthesis.
3. Applying auxin exogenously to a plant may have limited effects because
A auxin may form inactive conjugates with other molecules
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